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 The immature boy-king Richard II (Woody Norman) is racked with nightmares and unable to govern. — Bilge Ebiri, Vulture, 11 Sep. 2026 Top 5 most iconic college live mascot moments Reggie was an immature male and the zoo believed he was injured from a collision with a truck. — Maddie Rhodes, USA Today, 9 Sep. 2026 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 See All Example Sentences for immature

Recent Examples of Synonyms for immature

Adjective

Désir, a married father of two young children, is among several people accused of helping advance the conspiracy that culminated in Moïse’s killing.

— Jacqueline Charles, Miami Herald, 3 Nov. 2026
Room for Disagreement Duke, the editor-in-chief, argues the publication reflects where younger American media consumers are heading.

— Max Tani, semafor.com, 2 Nov. 2026

Definition of young

Adjective

Yet my first response was a childish pride that Dad had been deemed important enough to attract Hoover’s attention.

— Literary Hub, Literary Hub, 26 Oct. 2026
There has always been a childish aspect to him — in a good way — and his curiosity hasn’t dimmed even as his age has advanced.

— Samantha Conti, Footwear News, 23 Oct. 2026

Definition of childish

Adjective

Things won’t be at an elite level because this is still a young, inexperienced team.

— Chris Perkins, Sun Sentinel, 28 Oct. 2026
Under Sorrells, attorneys representing the state often rely on equally inexperienced colleagues or, in some instances, opposing counsel, for training, sources said.

— Fort Worth Star-Telegram, Fort Worth Star-Telegram, 24 Oct. 2026

Definition of inexperienced

Adjective

The waiver, which ACS received in 2023, allowed the agency to place multiple juvenile detainees to sleep in hallways, classrooms and chapels, potentially restricting access to educational and other programming.

— Cayla Bamberger, New York Daily News, 1 Nov. 2026
Directed by Claudia Estrada Tarascó, the film follows girls in a juvenile justice facility who bond over music and dreams of a Barcelona trap competition.

— Emiliano de Pablos, Variety, 1 Nov. 2026

Definition of juvenile

Adjective

It was used in the 1820 Missouri Compromise to establish the limits of human bondage in the still adolescent United States and became synonymous with the fundamental divisions that exploded into the Civil War four decades later.

— ABC News, ABC News, 29 Oct. 2026
Ile began her career as an adolescent, singing backup vocals for Calle 13, the band started by her brothers, Residente and Visitante (René Pérez Joglar and Eduardo Cabra Martínez).

— Helena Alonso Paisley, Miami Herald, 28 Oct. 2026