Synonyms of grown-up

grown-up 1 of 3

adjective

ˈgrōn-ˌəp 

as in mature

relating to or typical of adults; displaying proper maturity

they have yet to find a grown-up way of handling their marital problems

Synonyms & Similar Words

• mature
• adult

Antonyms & Near Antonyms

• adolescent
• immature
• childish
• infantile
• kiddish

grown-up

2 of 3

noun

as in adult

a fully grown person

once you turn 12, you get to eat with the grown-ups at Thanksgiving

Synonyms & Similar Words

• adult
• senior citizen
• middle-ager
• oldster
• elder
• ancient
• graybeard
• old-timer
• senior
• gaffer

Antonyms & Near Antonyms

• child
• kid
• toddler
• tyke
• infant
• moppet
• cub
• tot
• baby
• tad
• bairn
• adolescent
• youth
• youngster
• juvenile
• minor
• teenager
• teen
• youngling
• tween
• preteen
• teenybopper
• teener
• preteen-ager

grown up

3 of 3

verb

past participle of grow up

as in grown

to become mature

everyone has to grow up at some point in their lives

Synonyms & Similar Words

• grown
• progressed
• aged
• matured
• developed
• ripened
• evolved
• softened
• blossomed
• flourished
• flowered
• got on
• bloomed
• got along
• opened
• mellowed
• unfolded
• advanced
• burgeoned
• grayed

Antonyms & Near Antonyms

• declined
• deteriorated
• worsened
• sunk
• dried
• degenerated
• faded
• weakened
• decayed
• wasted (away)
• shriveled
• waned
• drooped
• wilted
• flagged
• returned
• withered
• sagged
• reverted
• regressed
• lapsed
• retrogressed
• backslid

Example Sentences

Recent Examples of grown-up

Adjective

Inside The Limited XT feels like a grown-up Subaru cabin - useful, roomy and not fussy. — Josh Max, Forbes.com, 1 June 2026

Today’s new wave of halter tops feels grown-up and refined, reimagined in sleek, streamlined shapes that have become fixtures everywhere from the runway to the red carpet — and across the vacation wardrobes defining Euro-summer style. — Lauren Fisher, Footwear News, 30 May 2026

Noun

Reportedly shot for less than $100,000, this tale of Pooh and Piglet all grown-up and running amok recently opened to box office success in Mexico and is currently playing on cinema screens around America. — Clark Collis, EW.com, 16 Feb. 2023

Verb

Williams moved to North Hollywood with his family in 1947, having grown up in Queens. — Tim Greiving, Los Angeles Times, 4 May 2026

People who have grown up watching YouTube programs and following TikTok figures feel more comfortable with such personalities, says Magid. — Brian Steinberg, Variety, 20 Apr. 2026