Synonyms of the word

adolescent

• adj. Characteristic of, or relating to, or undergoing adolescence; immature.
• n. A teenager; a juvenile after puberty.

immature

• adj. Not fully formed or developed, unripe, not mature.
• adj. Childish in behavior, not mature.
• n. An immature member of a species.

jejune

• adj. Not nutritious.
• adj. Lacking matter; empty; devoid of substance.
• adj. Naive; simplistic.

juvenile

• adj. young; not fully developed.
• adj. characteristic of youth or immaturity; childish.
• n. A prepubescent child.
• n. A person not legally of age, or who is younger than may be charged with an offence.
• n. An animal that is not sexually mature.
• n. An actor playing a child's role.
• n. A publication for young adult readers.

puerile

• adj. Characteristic of, or pertaining to, a boy or boys; confer: puellile.
• adj. Childish; trifling; silly.

stripling

• n. (archaic) A youth in the state of adolescence, or just passing from boyhood to manhood; a lad.

teen

• n. (clipped form of teenager) A person between 13 and 19 years old.
• adj. Of or having to do with teenagers.
• n. (archaic) Grief; sorrow; trouble; ill-fortune; harm; suffering.
• n. (archaic or obsolete) Vexation; anger; hate.
• v. (transitive, obsolete) To excite; to provoke; to vex; to afflict; to injure.
• v. (reflexive, obsolete) To become angry or distressed.
• v. (transitive, obsolete, provincial) To hedge or fence in; to enclose.

teenage

• n. (chiefly Kent dialect) Brushwood for fences and hedges.
• adj. Of or relating to an age between thirteen and nineteen years old.

teenaged

• adj. aged between thirteen and nineteen inclusive; teenage.

teenager

• n. A person between 13 and 19 years of age; an adolescent.

young

• adj. In the early part of growth or life; born not long ago.
• adj. At an early stage of existence or development; having recently come into existence.
• adj. (Not) advanced in age; (far towards or) at a specified stage of existence or age.
• adj. Junior (of two related people with the same name).
• adj. (of a decade of life) Early.
• adj. Youthful; having the look or qualities of a young person.
• adj. Of or belonging to the early part of life.
• adj. (obsolete) Having little experience; inexperienced; unpracticed; ignorant; weak.
• n. People who are young; young people, collectively; youth.
• n. Young or immature offspring (especially of an animal).
• n. (rare, possibly nonstandard) An individual offspring; a single recently born or hatched organism.
• v. (informal or demography) To become or seem to become younger.
• v. (informal or demography) To cause to appear younger.
• v. (geology) To exhibit younging.