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 Harvesting too early on immature beds also affects the maturation of the rice kernels over time, officials said. — Frank Vaisvilas, jsonline.com, 9 Sep. 2026 Tests revealed that Matias had neuroblastoma, a rare childhood cancer that develops from immature nerve cells, per the Cleveland Clinic. — Angelique Brenes, PEOPLE, 1 Sep. 2026 There’s nothing wrong with holding on to childhood and being a little immature from time to time. — Loren Savini, Allure, 22 Aug. 2026 The acclaimed writer Rachel Cusk’s controversial new novel Life of M is an intimate, unvarnished character study of an A-list movie star who is depicted as hollow, immature and cynical, an intellectual poseur and an artist wannabe. — Gary Baum, HollywoodReporter, 19 Aug. 2026 See All Example Sentences for immature

Recent Examples of Synonyms for immature

Adjective

After years of cruel dismissal from his grandfather, Kang Seung-woon (Jung Jin-young), and relentless pressure from his mother, Kang Ji-hye (Yoon Se-ah), Pi-o doubts his talent.

— Kayti Burt, Time, 6 Oct. 2026
Now, having accomplished the feat at such a young age, Lamine Yamal is poised to cash in for years to come.

— Justin Birnbaum, Sportico.com, 6 Oct. 2026

Definition of young

Adjective

This brings us back to how Crohn’s is not juvenile idiopathic arthritis.

— John Mildenberger, STAT, 2 Oct. 2026
The transition from tadpole to juvenile frog is never easy — legs sprout, tails shrink and lungs develop for a life on land, all while being hunted by fish and other predators.

— ABC News, ABC News, 29 Sep. 2026