IMMATURE Synonyms: 101 Similar and Opposite Words

immature

adjective

ˌi-mə-ˈchu̇r

Definition of immature

as in young

being in the early stage of life, growth, or development immature frogs are called "tadpoles"

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in childish

having or showing the annoying qualities (as silliness) associated with children an immature teenager who still threw tantrums

Synonyms & Similar Words

Antonyms & Near Antonyms

as in inexperienced

lacking in adult experience or maturity many high school students are still too immature to foresee the consequences of their actions

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Antonyms & Near Antonyms

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of immature Look for eggplants that are smaller and immature, that are firm, smooth-skinned and heavy for their size — full-size and puffy ones can be bitter and have harder seeds. — Kate Bradshaw, Mercury News, 7 July 2026 In immature stages, the insects can be controlled with insecticidal soap or horticultural oil. — Madeline Buiano, Martha Stewart, 7 July 2026 In practice, portions of the automation framework still feel slightly immature. — Michael Lydick, PC Magazine, 29 June 2026 These are the immature stages of small brown moths. — Tom MacCubbin, The Orlando Sentinel, 27 June 2026 See All Example Sentences for immature

Recent Examples of Synonyms for immature

Adjective

As Texas’ public-school enrollment experiences its first non-pandemic enrollment decline in decades, Tarrant County’s pre-K enrollment is also losing its youngest students.

— Lina Ruiz, Fort Worth Star-Telegram, 30 July 2026
Additionally, thin or fragile skin can tear or simply not hold designs as well as younger, more elastic skin.

— Rachel Brown Kirkland, AJC.com, 30 July 2026

Definition of young

Adjective

Designing a kid-friendly room no longer means settling for decor that looks childish.

— Audrey Lee, Architectural Digest, 29 July 2026
The basics of investing are set out in accessible, but not childish, terms, and the little tutorials are free of any hint of edutainment or corniness.

— Marie Sapirie, Forbes.com, 20 July 2026

Definition of childish

Adjective

The Dolphins entered camp with a young and relatively inexperienced group of edge rushers, placing the Michigan product in the unusual position of being asked to help lead others while still fighting to reestablish himself.

— Tyler M. Carmona July 30, Miami Herald, 30 July 2026
Others point out working with an inexperienced pitching coach, working behind a bad defense and working without a contract for next season as pieces to the puzzle.

— Will Sammon, New York Times, 30 July 2026

Definition of inexperienced

Adjective

The brothers, longtime sport fishermen who live in Massachusetts, released a juvenile tiger shark in late July after catching it from a beach.

— ABC News, ABC News, 3 Aug. 2026
Colt Gray’s jail counselor, Stephen Baker, later confirmed their juvenile inmates are not allowed to have photos of school shooters.

— Isabel Rosales, CNN Money, 2 Aug. 2026

Definition of juvenile

Adjective

Myocarditis, in particular, has been most typically seen in adolescent and young adult males within a week of their second mRNA Covid vaccine dose, but the CDC says that most patients respond well to medicine and rest and feel better quickly.

— Deidre McPhillips, CNN Money, 4 Aug. 2026
Everything since has come from that - the Dispelling the Myths series from 2001, the training work at Panos Caribbean, and in 2008 EVE for Life, when my own research showed me that adolescent girls and young women were the gap nobody was filling.

— Jallicia Jolly, Forbes.com, 1 Aug. 2026