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

Relevance

Antonyms & Near Antonyms

as in childish

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

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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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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 Edamame Edamame are young, immature soybeans harvested early. — Eleesha Lockett, Verywell Health, 17 July 2026 The majority of the pest detections have been of immature life stages of the insect such as egg masses. — Lizzie Kane july 9, Sacbee.com, 9 July 2026 From the first whistle, the Americans looked too clumsy, disconnected and immature to compete for the World Cup quarterfinals berth. — Tom Krasovic, San Diego Union-Tribune, 8 July 2026 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 See All Example Sentences for immature

Recent Examples of Synonyms for immature

Adjective

The girl, believed to be 18 or 19 years old, had been with a group of young people who were jumping from the bridge, the fire department said.

— Richard Ramos, CBS News, 6 Aug. 2026
Later on, Bret wanders away from his friends and runs into Debbie’s father, Terry Schaffer (Wes Bentley), entertaining handsome young men in the hot tub.

— Louis Peitzman, Vulture, 6 Aug. 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

And it must be said that while the material is thoroughly juvenile, the films impart valuable messages to their impressionable viewers.

— Frank Scheck, HollywoodReporter, 9 Aug. 2026
After the altercation, the juvenile employee recalled that Grayson appeared to lower herself to the floor in the dining area.

— Desiree Anello, PEOPLE, 9 Aug. 2026