13 Idioms about Growing Up

Idioms about growing up capture the universal journey from childhood to adulthood with wit and wisdom. These colorful expressions reveal how different cultures view maturity, responsibility, and life’s inevitable transitions. Whether you are navigating your own coming-of-age or trying to understand these phrases in conversation, this guide breaks down 13 essential idioms that color our language about growing up.

From the playful “kicking the bucket” (which has nothing to do with actual buckets) to the philosophical “coming of age,” these phrases carry layers of meaning. This post covers each idiom’s origin, how to use it in a sentence, and why it matters in everyday communication.

Simply put, these 13 idioms about growing up help you express life’s milestones, struggles, and hard-earned wisdom in ways plain language cannot. Master them, and you will sound more natural and expressive in English.

Key Takeaways

• Idioms about growing up add color and depth to conversations about life stages and personal development.
• Each idiom has a unique origin story, from maritime history to farming traditions.
• Using these expressions correctly can make your English sound more native and engaging.

1. Coming of Age – The Classic Rite of Passage

The phrase “coming of age” describes the transition from childhood to adulthood. It is perhaps the most direct idiom about growing up that exists in the English language. While the exact age varies across cultures, the concept remains universal.

In literature and film, coming-of-age stories follow a protagonist who experiences significant personal growth and self-discovery. Think of classics like “To Kill a Mockingbird” or modern favorites like “Lady Bird.” These narratives resonate because everyone recognizes that pivotal moment when innocence gives way to experience.

The idiom carries both excitement and melancholy. It acknowledges that growing up involves losing something while gaining something else. You trade carefree days for responsibilities, but you also gain autonomy and self-knowledge.

• Often associated with specific ages: 18, 21, or cultural milestones like bar mitzvahs
• Used in both literal and metaphorical contexts
• Represents emotional, not just physical, maturity
• Common in academic essays about character development
• Has spawned an entire literary genre

Tip: Use “coming of age” when discussing personal growth milestones, not just legal adulthood. It works beautifully in reflective writing.

In Japanese culture, the Coming of Age Day ceremony celebrates those who turn 20. In Jewish tradition, the bar and bat mitzvahs mark this transition at 13. These cultural variations show how deeply humans need to mark this threshold.

Best For: Formal writing, literary discussions, and conversations about significant personal transformations.

2. Kicking the Bucket – The Dark Side of Growing Up

“Kicking the bucket” is a euphemism for dying, and while it might seem morbid, it reflects the ultimate reality of growing up: none of us escape mortality. The phrase has murky origins, but one popular theory involves people standing on buckets to hang themselves.

More likely, the phrase comes from an old French term “buquet” meaning a wooden frame used to hang slaughtered animals. When an animal kicked the bucket, it was dead. Over time, the phrase transferred from animals to humans.

Understanding this idiom matters because it appears frequently in casual conversation and literature. It softens the harsh reality of death with a touch of dark humor. You might hear someone say, “He kicked the bucket last Tuesday,” when discussing a deceased relative.

The idiom teaches us something profound about growing up: we must confront mortality honestly. Pretending death does not exist does not make it less real. Using humor to cope with difficult truths is a deeply human coping mechanism.

According to the Oxford English Dictionary, the phrase “kick the bucket” first appeared in print in 1785. That makes it nearly 240 years old, yet it remains in active use today. Language evolves, but some expressions prove remarkably durable.

Best For: Informal conversations where you want to address death with a touch of dark humor rather than clinical detachment.

3. Cutting the Apron Strings – Learning Independence

“Cutting the apron strings” refers to becoming independent from one’s mother or parents. The image comes from a literal apron string that ties a child to their mother’s garment. Cutting those strings symbolizes freedom and self-sufficiency.

This idiom about growing up appears most often when discussing teenagers leaving home for college, young adults starting their first jobs, or newlyweds establishing their own households. It acknowledges the emotional work required to separate from family while maintaining love and connection.

The phrase carries a bittersweet tone. Cutting apron strings is necessary for healthy development, but it can feel painful for both parents and children. Many parents struggle with this transition, experiencing what psychologists call “empty nest syndrome” when their children leave home.

Psychologists note that healthy separation from parents is crucial for forming adult identity. Erik Erikson’s stages of psychosocial development highlight this as a key task of adolescence and young adulthood. Without this separation, individuals may struggle with decision-making and self-confidence.

1. Recognize that independence is a gradual process, not a single event
2. Communicate openly with parents about your need for autonomy
3. Take responsibility for your own decisions, including mistakes
4. Maintain healthy boundaries while preserving family bonds
5. Seek support from peers who are navigating the same transition

Important: Cutting apron strings does not mean abandoning family. It means building an adult relationship with them based on mutual respect.

Best For: Conversations about leaving home, financial independence, or making life decisions without parental approval.

4. Sowing Wild Oats – The Reckless Years

“Sowing wild oats” describes the period when young people engage in reckless or irresponsible behavior before settling down. The metaphor comes from agriculture, where sowing poor-quality oats yields a poor crop. Young people, like wild oats, need to get their wildness out before becoming productive members of society.

The idiom carries a forgiving tone. It suggests that youthful indiscretions are not only normal but perhaps necessary for healthy development. Society implicitly grants young adults a pass for mistakes made during this experimental phase.

However, the phrase is increasingly criticized for its gendered application. Historically, it applied mostly to young men who were expected to “settle down” after their adventures. Women who sowed wild oats faced harsher judgment.

Modern usage tries to be more inclusive.

Cultural attitudes toward this idiom vary widely. In some cultures, any deviation from responsible behavior is unacceptable at any age. In others, young adulthood is explicitly understood as a time for exploration and even excess.

• Typically applies to ages 18-30
• Often involves romantic or social experimentation
• Implies eventual return to responsible behavior
• Can be used self-deprecatingly or judgmentally
• Has equivalents in many languages

Best For: Reflecting on youthful mistakes with nostalgia or discussing the importance of experiential learning during young adulthood.

5. Wet Behind the Ears – The Naive Beginner

“Wet behind the ears” describes someone who is inexperienced, naive, or new to a situation. The phrase refers to the last part of a newborn animal’s body to dry after birth. If that area is still wet, the creature is very young indeed.

This idiom about growing up appears in workplace settings, mentoring relationships, and any context where experience matters. A new employee might be called “wet behind the ears” during their first weeks on the job. A fresh graduate entering the workforce will likely hear this phrase.

The idiom carries mild criticism but not harsh judgment. It acknowledges that everyone starts somewhere and that inexperience is a temporary state. With time and effort, the wetness dries, and the person gains the experience they lack.

Mentorship programs exist precisely because organizations recognize the value of moving people from “wet behind the ears” to experienced professionals. According to a 2023 study by the Association for Talent Development, employees with mentors are 30% more likely to be promoted than those without.

Tip: If someone calls you wet behind the ears, take it as motivation to learn quickly. Ask questions, seek feedback, and build your skills deliberately.

Best For: Workplaces, educational settings, and any environment where experience levels vary significantly among participants.

6. Finding Your Feet – Gaining Confidence

“Finding your feet” means becoming comfortable and confident in a new situation. The idiom draws on the physical act of a baby learning to stand and walk. Just as a toddler wobbles before walking steadily, adults wobble when facing new challenges.

This idiom about growing up applies to countless scenarios: starting a new job, moving to a new city, beginning a relationship, or learning a new skill. In every case, there is an initial period of uncertainty, followed by gradual confidence.

The phrase emphasizes process over outcome. Finding your feet takes time. It acknowledges that initial struggle is normal and expected.

The goal is not to skip the struggle but to move through it successfully.

Career coaches often use this phrase when onboarding new employees. They reassure nervous hires that feeling lost is normal and that competence will come with time. This validation reduces anxiety and helps people learn more effectively.

Best For: Encouraging someone going through a transition, or describing your own journey toward competence in a new role.

7. Spreading Your Wings – Embracing Freedom

“Spreading your wings” means gaining independence and exploring new possibilities. The image is of a young bird leaving the nest for the first time. It is one of the most positive idioms about growing up because it emphasizes opportunity rather than loss.

Unlike “cutting the apron strings,” which focuses on separation from parents, “spreading your wings” focuses on personal expansion. It suggests that growing up opens doors rather than closing them. The phrase radiates optimism and excitement.

People use this idiom when discussing major life changes: going to college, traveling abroad, starting a business, or making a significant career change. It applies whenever someone steps outside their comfort zone to pursue growth.

Psychologists who study human development emphasize the importance of novelty for personal growth. When we spread our wings, we expose ourselves to new experiences that reshape our identities. This is how we discover who we truly are.

• Use when someone takes a bold step toward independence
• Works for both young adults and anyone making major changes
• Carries overwhelmingly positive connotations
• Often accompanied by encouragement and support
• Implies trust in the person’s abilities

Best For: Celebrating achievements, encouraging bold moves, and framing life transitions as opportunities rather than losses.

8. Growing Pains – The Discomfort of Development

“Growing pains” originally referred to physical discomfort in children’s legs, often experienced during rapid growth spurts. Today, the phrase applies to any discomfort associated with personal or organizational development.

This idiom about growing up acknowledges that progress hurts. When a company expands too quickly, it experiences growing pains. When a relationship deepens, both partners feel growing pains.

When an individual takes on more responsibility, growing pains are inevitable.

The phrase serves a valuable function: it normalizes difficulty during transitions. If you are experiencing growing pains, it means you are growing. Stagnation produces no pain, but it also produces no progress.

Medical professionals note that actual growing pains affect about 40% of children, typically between ages 3 and 12. The condition usually resolves on its own, much like the developmental challenges it metaphorically represents.

Warning: Chronic pain in children should always be evaluated by a doctor. The idiom “growing pains” should never dismiss genuine medical concerns.

Best For: Normalizing struggle during growth, whether personal, professional, or organizational.

9. Leaving the Nest – Venturing Out Alone

“Leaving the nest” describes moving out of your parents’ home to live independently. The phrase comes from birds, where fledglings eventually leave the nest to build lives of their own. It is one of the most concrete idioms about growing up.

In many Western countries, leaving the nest is seen as a crucial milestone of adulthood. Young adults who remain at home may face social pressure to leave. However, economic realities have changed this expectation in recent years.

According to the Pew Research Center, in 2020, 52% of young adults in the United States lived with their parents, the highest percentage since the Great Depression. This statistic reflects rising housing costs, student debt, and economic uncertainty rather than a failure to grow up.

Leaving the nest involves more than changing addresses. It means taking on cooking, cleaning, budgeting, and countless other responsibilities. It means learning to be alone and to manage your own time.

These skills cannot be learned from a textbook.

1. Create a budget before you move
2. Learn basic cooking skills
3. Understand your lease agreement
4. Build an emergency fund
5. Establish a routine that supports your goals

Best For: Discussions about moving out, financial independence, and the practical realities of adult life.

10. Shouldering Responsibilities – Accepting Adult Burdens

“Shouldering responsibilities” means accepting and carrying the duties that come with adulthood. The image is of carrying a physical weight on your shoulders. This idiom about growing up emphasizes the burden aspect of maturity.

Growing up inevitably involves taking on responsibilities: paying bills, maintaining employment, caring for others, and making difficult decisions. The phrase acknowledges that these burdens are heavy but suggests that carrying them is a sign of maturity.

People who shoulder responsibilities well earn respect. They become reliable, trustworthy, and valued members of their communities. Conversely, those who shirk responsibilities face criticism and strained relationships.

The transition to shouldering responsibilities often feels abrupt. One day you are a student with minimal obligations; the next you have a mortgage, a car payment, and a demanding job. The weight can feel crushing without proper preparation.

Research on adult development suggests that taking on responsibilities actually promotes psychological growth. A 2019 study published in the Journal of Adult Development found that adults who embraced responsibilities reported higher life satisfaction than those who avoided them.

• Financial responsibilities: bills, savings, investments
• Career responsibilities: work performance, professional development
• Relationship responsibilities: communication, commitment, care
• Community responsibilities: volunteering, civic engagement
• Personal responsibilities: health, self-care, continuous learning

Best For: Serious discussions about adulthood, career growth, and the weight of adult decision-making.

11. The School of Hard Knocks – Learning Through Experience

“The school of hard knocks” refers to learning through difficult life experiences rather than formal education. This idiom about growing up honors practical wisdom gained through struggle and failure.

People who graduate from the school of hard knocks often lack formal credentials but possess deep practical knowledge. They have learned through trial and error, through successes and failures, through pain and recovery. This knowledge is hard-won and deeply internalized.

The phrase carries respect and admiration. It acknowledges that some lessons cannot be taught in classrooms. The school of hard knocks produces resilience, resourcefulness, and practical wisdom that formal education cannot replicate.

However, the idiom also carries a warning. Learning through hard knocks is painful. It would be better to learn some lessons more easily.

The phrase implicitly values formal education while acknowledging its limitations.

Best For: Acknowledging practical wisdom, discussing career paths that do not require formal education, and honoring resilience.

12. A Rite of Passage – Crossing Cultural Thresholds

“A rite of passage” refers to a ceremony or event that marks an important transition in a person’s life. While not strictly an idiom, this phrase appears frequently in discussions about growing up and deserves inclusion.

Rites of passage exist in every culture. They include religious ceremonies like confirmation or bar mitzvahs, educational milestones like graduations, and personal achievements like getting a driver’s license. These events structure the otherwise chaotic process of growing up.

The anthropologist Arnold van Gennep first systematically studied rites of passage in 1909. He identified three stages: separation, transition, and incorporation. This framework applies to everything from tribal initiations to modern college orientations.

Modern society has fewer formal rites of passage than traditional cultures. Some sociologists argue this creates confusion about when childhood ends and adulthood begins. Without clear markers, young people may struggle to understand their social status.

Creating your own rites of passage can help. Graduating from college, moving into your first apartment, or completing a challenging project can serve as meaningful markers of growth. The key is to consciously recognize these moments as significant.

Important: Rites of passage are not just ceremonies; they are psychological tools that help us process major life changes.

Best For: Discussions about cultural traditions, personal milestones, and the psychological need for structured transitions.

13. The Best Years of Your Life – Nostalgia and Reality

“The best years of your life” is a phrase often applied to youth, particularly high school or college. This idiom about growing up both celebrates the past and creates pressure to enjoy the present moment.

The phrase carries complicated messages. On one hand, it suggests that youth is precious and should be enjoyed fully. On the other hand, it implies that life after youth is inevitably worse, which is simply not true for many people.

Research on happiness across the lifespan reveals a U-shaped curve. According to a 2020 study published in Social Science & Medicine, happiness tends to decline from young adulthood into middle age, then rises again after age 50. The “best years” may actually come later in life.

This idiom also creates pressure. If these are supposed to be the best years, why do you feel stressed, anxious, or unhappy? This pressure can paradoxically reduce enjoyment and increase dissatisfaction.

A healthier approach is to recognize that different life stages offer different kinds of joy. Youth offers energy and novelty. Middle age offers stability and achievement.

Later life offers wisdom and perspective. Each stage has its own rewards.

• Youth: energy, novelty, physical vitality
• Middle age: stability, achievement, deep relationships
• Later life: wisdom, perspective, freedom from expectations

Best For: Reflecting on life satisfaction, challenging assumptions about aging, and encouraging appreciation of the present moment.

Frequently Asked Questions

What does “wet behind the ears” mean?

“Wet behind the ears” means inexperienced or naive. The phrase refers to the last part of a newborn animal’s body to dry after birth, symbolizing extreme youth and lack of experience.

Why do we say “sowing wild oats”?

“Sowing wild oats” refers to youthful reckless behavior before settling down. The agricultural metaphor compares poor-quality oats to poor choices that young people make before maturing.

Is “kicking the bucket” considered rude?

“Kicking the bucket” is informal and can be seen as disrespectful in formal contexts. It is best used in casual conversation with people who appreciate dark humor about death.

What is the difference between “cutting apron strings” and “spreading your wings”?

“Cutting apron strings” focuses on separation from parents, while “spreading your wings” emphasizes personal growth and opportunity. The former is about independence; the latter is about expansion.

Are idioms about growing up the same across cultures?

No, idioms vary significantly across cultures. While many cultures have expressions about maturity, the specific imagery and connotations differ based on cultural values and traditions.

Final Thoughts

These 13 idioms about growing up reveal how language captures the complexity of human development. From the pain of growing pains to the joy of spreading your wings, each phrase offers a unique lens on maturity. Use them to enrich your conversations and deepen your understanding of life’s journey.