im·​ma·​ture | \ ˌi-mə-ˈtu̇r How to pronounce immature (audio) , -ˈtyu̇r, -ˈchu̇r How to pronounce immature (audio) \

Definition of immature

1a : exhibiting less than an expected degree of maturity emotionally immature adults
b : lacking complete growth, differentiation, or development immature fruits a sexually immature bird
c : having the potential capacity to attain a definitive form or state : crude, unfinished a vigorous but immature school of art
2 archaic : premature

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Other Words from immature

immature noun
immaturely adverb
immaturity \ ˌi-​mə-​ˈtu̇r-​ə-​tē How to pronounce immature (audio) , -​ˈtyu̇r-​ , -​ˈchu̇r-​ \ noun

Synonyms & Antonyms for immature



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Examples of immature in a Sentence

The flock included both adult and immature birds. His teachers have complained about his immature behavior.
Recent Examples on the Web Both male and female mockingbirds sing, but the midnight melodies generally come from immature males who have not yet found a lifetime mate, or an older male who has lost a mate. San Diego Union-Tribune, 10 July 2021 The course opened in the Chaska countryside in 1962 and remained way too immature as a track to be hosting the most major of championships. Star Tribune, 10 July 2021 That cultural given is sympathetically portrayed in Jody and Yvette’s screaming matches, in which their immature egos compete with their biological urges. Armond White, National Review, 7 July 2021 In the film, Seth Rogen’s immature, stoned character must rally, rather quickly, to become a partner and father., 30 June 2021 Honeydew Honeydew might be the trickiest of the trio, as immature fruits won’t ripen at all after picking, but mature honeydew can continue to ripen on your counter once picked. Paul Stephen Paul’s Cooking Tips, San Antonio Express-News, 21 June 2021 Prosecutors countered in court filings that Weier is still immature and susceptible to dangerous influences. Todd Richmond, Star Tribune, 1 July 2021 Derrek’s most natural state is that of an immature kid. Morgan Baila,, 29 June 2021 The Suns' savior in game four was one of its youngest, and formally its most immature, players. Kent Somers, The Arizona Republic, 28 June 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'immature.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of immature

1548, in the meaning defined at sense 2

History and Etymology for immature

Latin immaturus, from in- + maturus mature

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Time Traveler for immature

Time Traveler

The first known use of immature was in 1548

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Statistics for immature

Last Updated

20 Jul 2021

Cite this Entry

“Immature.” Dictionary, Merriam-Webster, Accessed 30 Jul. 2021.

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More Definitions for immature



English Language Learners Definition of immature

: not fully developed or grown
: acting in a childish way : having or showing a lack of emotional maturity


im·​ma·​ture | \ ˌi-mə-ˈtu̇r How to pronounce immature (audio) , -ˈtyu̇r, -ˈchu̇r \

Kids Definition of immature

1 : not yet fully grown or ripe an immature bird immature fruit
2 : acting in or exhibiting a childish manner an immature teenager immature behavior

Other Words from immature

immaturely adverb


im·​ma·​ture | \ ˌim-ə-ˈt(y)u̇(ə)r also -ˈchu̇(ə)r \

Medical Definition of immature

: lacking complete growth, differentiation, or development immature blood cells emotionally immature

Other Words from immature

immaturely adverb
immaturity \ -​ˈt(y)u̇r-​ət-​ē also -​ˈchu̇r-​ \ noun, plural immaturities

More from Merriam-Webster on immature

Nglish: Translation of immature for Spanish Speakers

Britannica English: Translation of immature for Arabic Speakers


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