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also grown-up  (grōn′ŭp′)
An adult.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. having reached the age of maturity.
2. characteristic of or suitable for adults.
grown′-up′ness, n.



a fully grown person; adult.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.grownup - a fully developed person from maturity onwardgrownup - a fully developed person from maturity onward
individual, mortal, person, somebody, someone, soul - a human being; "there was too much for one person to do"
adult body - the body of an adult human being
brachycephalic - an adult with a short broad head
caregiver - a person who is responsible for attending to the needs of a child or dependent adult
catch, match - a person regarded as a good matrimonial prospect
centrist, middle of the roader, moderate, moderationist - a person who takes a position in the political center
eccentric, type, character, case - a person of a specified kind (usually with many eccentricities); "a real character"; "a strange character"; "a friendly eccentric"; "the capable type"; "a mental case"
conservative, conservativist - a person who is reluctant to accept changes and new ideas
dolichocephalic - an adult with a long narrow head
elder, senior - a person who is older than you are
ex-spouse - a person who was formerly a spouse
host - a person who invites guests to a social event (such as a party in his or her own home) and who is responsible for them while they are there
important person, influential person, personage - a person whose actions and opinions strongly influence the course of events
Jack of all trades - a person able to do a variety of different jobs acceptably well
liberal, liberalist, progressive - a person who favors a political philosophy of progress and reform and the protection of civil liberties
liberal - a person who favors an economic theory of laissez-faire and self-regulating markets
adult male, man - an adult person who is male (as opposed to a woman); "there were two women and six men on the bus"
militarist, warmonger - a person who advocates war or warlike policies
disarmer, pacificist, pacifist - someone opposed to violence as a means of settling disputes
patrician - a person of refined upbringing and manners
pledgee - someone to whom a pledge is made or someone with whom something is deposited as a pledge
pledger - someone who makes or gives a pledge
professional, professional person - a person engaged in one of the learned professions
sobersides - a serious and sedate individual
man of the world, sophisticate - a worldly-wise person
homebody, stay-at-home - a person who seldom goes anywhere; one not given to wandering or travel
unemotional person, stoic - someone who is seemingly indifferent to emotions
thoroughbred - a well-bred person
adult female, woman - an adult female person (as opposed to a man); "the woman kept house while the man hunted"
Adj.1.grownup - (of animals) fully developedgrownup - (of animals) fully developed; "an adult animal"; "a grown woman"
animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement
mature - having reached full natural growth or development; "a mature cell"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.