immature

adjective
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 immaturity (audio) , -​ˈtyu̇r-​ , -​ˈchu̇r-​ \ noun

Synonyms & Antonyms for immature

Synonyms

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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 We are also treated to her usual immature humor as well as a new romance. Benjamin Levin, CNN Underscored, "The Last of Us Part II left us amazed, yet despondent," 15 June 2020 Still physically immature but has the shoulders and base to put on weight in time. oregonlive, "Oregon prospects well-represented in ESPN’s updated basketball recruiting rankings," 10 June 2020 The conversation ends with Smith muttering under her breath that Young is acting immature, and flashing wide annoyed eyes at her friend Mary. Morgan Baila, refinery29.com, "Amanza Smith Is Here To Shake Things Up On Selling Sunset Season 2," 22 May 2020 Having to share your attention can be challenging and can prompt her to regress to more immature behaviors (such as being overly attached to you or not sleeping through the night). New York Times, "Your 2-Year-Old," 18 Apr. 2020 One potential explanation is that the immune systems of children are too immature to trigger the massive inflammatory response that can lead to septic shock, organ failure and other complications in some COVID-19 patients, experts say. Los Angeles Times, "What COVID-19 patients young and old can teach us about the coronavirus," 8 May 2020 Babies born earlier than the first day of the 22nd week are generally too immature to be successfully treated with intensive care and have almost no chance of survival. Sarah Digregorio, New York Times, "Parents of Extremely Premature Babies Face an Impossible Choice," 16 Apr. 2020 Kelly said the defensive end was immature and didn't always take coaching well. Brandon Folsom, Detroit Free Press, "New Detroit Lions LB Julian Okwara, brother Romeo, now 5th NFL sibling tandem on same team," 25 Apr. 2020 An immature defense in my teens that followed me into adulthood. Robin Antalek, Longreads, "The Bigamist’s Daughter," 22 Apr. 2020

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

25 Jun 2020

Cite this Entry

“Immature.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/immature. Accessed 2 Jul. 2020.

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More Definitions for immature

immature

adjective
How to pronounce immature (audio) How to pronounce immature (audio)

English Language Learners Definition of immature

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

immature

adjective
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

immature

adjective
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

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