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

Working with sister stylist duo Chloe and Chenelle Delgadillo, Rodrigo has reconstructed her signature looks to feel softer and more grown-up, with outfits drawing from fashion references just as diverse as her musical taste. — Chelsey Sanchez, CNN Money, 25 June 2026

There was something so exciting about holding those glowing wands and feeling just a little grown-up while doing it. — Abby Price, Southern Living, 17 June 2026

Noun

For families While the vibe is much more honeymoon-y and grown-up than many of Bangkok’s other stays in the same price range, families are still very welcome. — Condé Nast, Condé Nast Traveler, 7 Oct. 2026

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

Not many people were left by then but Stanley Hurst was, raising four children on the same land where he’d been born and grown up. — Andrew Carter, Chicago Tribune, 5 July 2026

John had grown up in Bedfordshire, not far from the Tates, and as a young woman had opened a swimwear store called Sandstorm Boutique. — Heidi Blake, New Yorker, 8 June 2026