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

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

Synonyms & Similar Words

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 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

Adding Waller feels like a shot across the bow at the Panthers’ younger tight ends in particular.

— Joseph Person, New York Times, 13 Aug. 2026
Meloni's current fashion choices — and political rhetoric — contrast starkly with those of her younger self.

— ABC News, ABC News, 13 Aug. 2026

Definition of young

Adjective

In just a few short weeks, his childish, naive world becomes brutally adult.

— Jesse Whittock, Deadline, 11 Aug. 2026
As Democrats and Republicans point the finger of blame at each other, even resorting to childish name calling, Americans are put in the uncomfortable position of trying to figure out who’s being truthful and who is lying.

— Mike Patton, Forbes.com, 7 Aug. 2026

Definition of childish

Adjective

There will be no lifeguards, and county rangers caution that the beach, like many along the Northern California coast, can have rip currents that pose a threat to inexperienced swimmers.

— Paul Rogers, Mercury News, 13 Aug. 2026
So Harbaugh created this competition of two inexperienced kickers.

— Pat Leonard, New York Daily News, 13 Aug. 2026

Definition of inexperienced

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