Adjectives for the Young: Describing Youth and Immaturity
Other adjectives for young depend on what you mean. For age, use youthful, juvenile, adolescent, teenage, infant or junior. For a young person’s energy and outlook, use lively, fresh-faced, eager, energetic, curious, idealistic. For inexperience, use inexperienced, green, naive, new or untested, and for childish behaviour, immature, childish, impulsive or reckless. Below, each group has example sentences, then words for young children, siblings and learners, a quick picker, words that are easy to confuse and a short practice.
Adjectives for young age
| Adjective | Who it describes | Example sentence |
|---|---|---|
| newborn | a baby in its first weeks | The newborn foal stood up within an hour. |
| infant | a baby (also used as a noun) | The clinic checks infant weight every month. |
| toddling | a child just learning to walk | Their toddling son pulled every book off the low shelf. |
| little | a small child (warm, informal) | The little boy waved at the train. |
| school-age | roughly 5 to 16 | The museum runs workshops for school-age children. |
| preteen | about 10 to 12 | The film is popular with preteen audiences. |
| teenage | 13 to 19 | Her teenage cousin works at the café on Saturdays. |
| adolescent | going through puberty (formal) | Adolescent sleep patterns shift later in the evening. |
| juvenile | under adult age, often legal or animal use | Juvenile offenders are tried in a separate court. |
| underage | below the legal age for something | The shop was fined for selling to underage drinkers. |
| junior | younger, or lower in rank | She coaches the junior team on Tuesdays. |
| youngest / younger | comparing ages | My younger brother is still at primary school. |
Adjectives for youthful qualities
These describe the good side of being young: energy, freshness and hope. Many also work for older people who keep those qualities.
| Adjective | Example sentence |
|---|---|
| youthful | At seventy, she still has a youthful laugh. |
| energetic | The energetic eight-year-olds ran laps around the field. |
| lively | A lively group of students filled the front rows. |
| spirited | The spirited young team never stopped attacking. |
| bright-eyed | Bright-eyed first-years crowded the welcome desk. |
| fresh-faced | A fresh-faced intern brought the coffee on her first morning. |
| eager | The eager volunteers arrived an hour early. |
| curious | Curious children asked the zookeeper a hundred questions. |
| idealistic | As an idealistic twenty-year-old, he wanted to change the world. |
| hopeful | The hopeful young actors waited for the casting list. |
| carefree | Those carefree summers by the river felt endless. |
| innocent | The child’s innocent question silenced the room. |
| playful | A playful puppy chewed the edge of the rug. |
| vibrant | The city has a vibrant young music scene. |
Adjectives for inexperience
- inexperienced – The inexperienced driver stalled at the lights.
- green (informal) – He was still green when he joined the newsroom.
- naive – She was naive enough to lend money to a stranger.
- new – The new recruits learned the rules in the first week.
- untested – The untested goalkeeper was thrown into the final.
- raw – The coach saw raw talent in the sixteen-year-old.
- wet behind the ears (idiom) – He is a bit wet behind the ears but learns fast.
- unworldly – The unworldly student had never left her village.
Adjectives for immature behaviour
These are critical. Use them about behaviour, and be careful using them about a real child to their parent.
| Adjective | Meaning | Example sentence |
|---|---|---|
| immature | acting younger than one’s age | It was immature of him to sulk after losing the game. |
| childish | silly in a way that suits a child, not an adult | The two managers had a childish argument over the parking space. |
| babyish | suited to a much younger child | She thought the cartoon was babyish. |
| juvenile | silly, adolescent (as criticism) | The office jokes were juvenile. |
| impulsive | acts without thinking | An impulsive teenager, he quit his job by text. |
| reckless | ignores danger | Reckless young drivers pay the highest insurance. |
| rebellious | resists rules and authority | She went through a rebellious phase at fifteen. |
| moody | changes mood often | He was moody all through his exam year. |
| petulant | sulky and bad-tempered | The petulant child kicked the table leg. |
| attention-seeking | acts up to be noticed | The attention-seeking post got hundreds of replies. |
Childlike vs childish
Childlike is praise: it describes a child’s good qualities in anyone (“childlike wonder”, “childlike honesty”). Childish is criticism: it describes silly or selfish behaviour (“a childish tantrum”). A grandfather can show childlike delight at a snowfall; a colleague who refuses to share the stapler is childish.
Adjectives for a young appearance
- baby-faced – The baby-faced 25-year-old was asked for ID at every bar.
- boyish / girlish – He has a boyish grin. She gave a girlish giggle.
- fresh-faced – Fresh-faced recruits lined up for the photo.
- gangly / lanky – The gangly thirteen-year-old had grown four inches in a year.
- rosy-cheeked – Rosy-cheeked children came in from sledging.
- youthful-looking – She is youthful-looking for her age.
- wide-eyed – A wide-eyed toddler stared at the fireworks.
Words for younger siblings, young learners and young professionals
| Who | Adjectives that fit | Example sentence |
|---|---|---|
| a younger brother or sister | little, annoying, adoring, cheeky, tag-along, protective | My cheeky little brother hides my phone every morning. |
| young learners | curious, eager, enthusiastic, inquisitive, easily distracted | Inquisitive young learners respond well to hands-on lessons. |
| a young athlete or performer | promising, gifted, rising, dedicated, precocious | The promising young actor trained every day at drama school. |
| a young professional | ambitious, driven, up-and-coming, junior, entry-level | The firm hires ambitious graduates into entry-level roles. |
| a young adult | independent, self-conscious, idealistic, newly independent | Newly independent students often struggle to budget. |
One searcher wanted a word for “a young actor who is highly trained, master level” and keeps training. Accomplished, disciplined, dedicated and precocious (unusually advanced for their age) fit: “a precocious, highly disciplined young actor”.
Young things, not just young people
Young also describes animals, plants, places and ideas, and each has its own usual words.
| Noun | Adjectives | Example sentence |
|---|---|---|
| animals | newborn, juvenile, fledgling, unweaned | Fledgling sparrows hopped about under the hedge. |
| plants and trees | young, sapling, tender, new-grown | Tender shoots appeared after the rain. |
| a company or project | fledgling, start-up, early-stage, budding | The fledgling company had only four staff. |
| a country or democracy | young, emerging, newly independent | The emerging democracy held its second election. |
| wine or cheese | young, fresh, unaged | A young cheese is mild and soft. |
| a relationship | new, early, budding, fledgling | Their budding friendship began on the school bus. |
| the day or night | early, young | “The night is young,” she said at ten o’clock. |
Describing a young character in writing
A single age word rarely makes a character come alive. Combine an age word, a quality and something they do.
- Flat: “He was a young, energetic boy.”
- Better: “Sam was a gangly, restless twelve-year-old who could not sit through a meal without tapping the table.”
- Flat: “She was young and naive.”
- Better: “At nineteen, Ana was naive enough to believe the landlord’s promise about the boiler.”
Showing the behaviour lets the reader decide the person is young; the adjective then only has to confirm it.
Positive words for school reports and references
Teachers and coaches often need kind, accurate words for young people. These are warm without exaggerating:
- enthusiastic – Leo is an enthusiastic member of the class who volunteers often.
- conscientious – Ella is conscientious and checks her work carefully.
- inquisitive – An inquisitive pupil, Omar asks questions that move the lesson on.
- maturing – Jack is maturing and now listens well to others in group work.
- promising – She is a promising young swimmer with a strong kick.
- willing – He is a willing helper who tidies without being asked.
For an area to improve, describe the behaviour, not the child: “is still learning to wait his turn” is kinder and clearer than “immature”.
Quick picker
| You want to say… | Try |
|---|---|
| simply young (formal) | youthful, juvenile, adolescent |
| full of energy | energetic, lively, spirited, bouncy |
| new to something | inexperienced, green, new, untested |
| too trusting | naive, innocent, unworldly, gullible |
| badly behaved for their age | immature, childish, petulant |
| advanced for their age | precocious, mature, gifted, wise beyond their years |
| young-looking | baby-faced, fresh-faced, boyish, girlish |
Words that are easy to confuse
- Youthful vs young. Young is a fact about age. Youthful is a quality, often of someone not young: “a youthful sixty”.
- Juvenile. Neutral in law and biology (“juvenile court”, “a juvenile eagle”), insulting about adult behaviour (“a juvenile joke”).
- Naive vs innocent. Innocent is usually kind: free of harm or guilt. Naive is a mild criticism: too trusting.
- Precocious. It praises a child’s early ability, but it can also mean a child who acts annoyingly grown-up.
- Teenage vs teenaged. Both are correct; teenage is more common.
Common mistakes
| Wrong | Right | Why |
|---|---|---|
| a ten years old boy | a ten-year-old boy | A compound age before a noun is hyphenated and singular. |
| He is ten-year-old. | He is ten years old. | No hyphens after the verb. |
| She is more young than me. | She is younger than me. | One-syllable adjectives take -er. |
| the youngs | the young / young people | The young already means young people. |
| a childish wonder at the stars | a childlike wonder at the stars | Childish is negative. |
Practice
- At 80, he still has a ______ sense of fun. (juvenile / youthful / petulant)
- She had never had a job before and was quite ______. (inexperienced / precocious / underage)
- The adults threw food at each other. It was ______. (childlike / childish / innocent)
- The nine-year-old plays Chopin like a professional. She is ______. (precocious / naive / green)
- Correct: “My sister is a fifteen years old girl.”
Answers: 1 youthful; 2 inexperienced; 3 childish; 4 precocious; 5 “My sister is a fifteen-year-old girl” or “My sister is fifteen years old.”
Quick answers
What is a formal word for young? Youthful for qualities, juvenile or adolescent for age, junior for rank.
What is a positive word for someone young and inexperienced? Promising, up-and-coming or eager to learn.
What is the opposite of young? Old, elderly (polite, for people), mature, aged or senior. For things, ancient, vintage or aged.
Is “youngster” an adjective? No, it is a noun: “The youngsters played in the yard.” The adjective is young or youthful.
How do you describe a young learner in one word? Curious is the most common and the most useful, because it names what makes young learners different.
See also adjectives for a child, adjectives for teens, adjectives for childhood and adjectives for a girl.
Checked against Merriam-Webster, the Chicago Manual of Style and the AP Stylebook. Spotted an error? Tell us — see our editorial policy.
