adultlike
Beyond their years
Adultlike describes qualities or behaviors resembling those of a grown person rather than a child.
It suggests maturity, responsibility, or composure: The child handled the disappointment in an adultlike manner.
The word is less common than its near-synonym adult-like or the single word adult used as an adjective.
Fully grown or developed
- wiseShowing good judgment
- experiencedHaving practical knowledge gained
- seasonedFlavored or battle-tested
- levelheadedCalm and judicious
sensible · prudent · judicious · thoughtful · reflective · composed · sober · perceptive
Obligated to answer for actions
- accountableObligated to explain oneself
- dependableWorthy of trust
- reliableConsistently performing as expected
- trustworthyWorthy of confidence
conscientious · diligent · disciplined · dutiful · principled · ethical · committed · self-sufficient
Weighty and requiring attention
- composedCalm and self-possessed
- dignifiedComposed and respectable
- solemnSerious and dignified
- formalFollowing strict protocol
reserved · restrained · poised · grave · earnest · subdued · staid · sedate
Worldly and cultured
- refinedPurified or cultured
- culturedEducated in arts, manners
- worldlyExperienced in practical affairs
- polishedSmooth, refined, accomplished
urbane · cosmopolitan · articulate · tasteful · elegant · discerning · savvy · well-spoken
mature
Fully grown or developed
- wiseShowing good judgment
- experiencedHaving practical knowledge gained
- seasonedFlavored or battle-tested
levelheaded · sensible · prudent · judicious · thoughtful · reflective · composed · sober · perceptive · insightful
responsible
Obligated to answer for actions
- accountableObligated to explain oneself
- dependableWorthy of trust
- reliableConsistently performing as expected
trustworthy · conscientious · diligent · disciplined · dutiful · principled · ethical · committed · self-sufficient · independent
serious
Weighty and requiring attention
formal · reserved · restrained · poised · grave · earnest · subdued · staid · sedate · unsmiling
sophisticated
Worldly and cultured
polished · urbane · cosmopolitan · articulate · tasteful · elegant · discerning · savvy · well-spoken · poised
pretend
Act as though
role-play · play-acting · precocious · ape · copycat · parrot · affect · posture · put-on
adult, adulthood, adulterate, adultery, adulting, adulterous, adulteration, nonadult, adultish