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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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 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 There’s nothing wrong with holding on to childhood and being a little immature from time to time. — Loren Savini, Allure, 22 Aug. 2026 See All Example Sentences for immature

Recent Examples of Synonyms for immature

Adjective

In the film, Thị Mầu is a gifted young beauty hemmed in by rigid custom and the demands of her family.

— Naman Ramachandran, Variety, 13 Oct. 2026
The Child Mind Institute notes that losing a close friendship can be emotionally painful for young people, and urges adults to take those experiences seriously rather than brushing them off.

— Ashley Lynch, Sacbee.com, 12 Oct. 2026

Definition of young

Adjective

In her Venice job, the majority of people had been in foster care, juvenile hall or prison.

— Steve Lopez, Los Angeles Times, 10 Oct. 2026
One 16-year-old suspect was transported to a juvenile detention center, while the four adults were taken to the Frederick County Adult Detention Center.

— CBS News, CBS News, 7 Oct. 2026

Definition of juvenile

Adjective

Changes in the adolescent brain make teenagers increasingly attentive to their social worlds, says Wayne State University psychology professor Hannah Schacter.

— Ashley Lynch, Sacbee.com, 12 Oct. 2026
At present, the autonomous vehicle is an adolescent product in more ways than one.

— Molly Fischer, New Yorker, 12 Oct. 2026