1
as in young
being in the early stage of life, growth, or development
immature frogs are called "tadpoles"
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Antonyms & Near Antonyms
2
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
3
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
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Recent Examples of immature
On a blind date, his descriptions of magical griffins and burning deserts sound humiliatingly immature.
—
Amy Nicholson, Los Angeles Times, 3 June 2026
Beckham is charismatic and generally more thoughtful than the perception created by the impulsive or immature decisions that create headlines.
—Dan Duggan, New York Times, 2 June 2026
And increasingly, emotionally immature minds are unable to distinguish fantasy, ideology and consequence from reality itself.
—Editorial, Boston Herald, 1 June 2026
Thiel’s vision of tech saving the world through unloosed, Saruman-style AI industrialists would be far more compelling if so many of these tech giants were not such strangely immature and insecure people.
—Nate Anderson, ArsTechnica, 26 May 2026
See All Example Sentences for immature
Amy Nicholson, Los Angeles Times, 3 June 2026
Beckham is charismatic and generally more thoughtful than the perception created by the impulsive or immature decisions that create headlines.
—Dan Duggan, New York Times, 2 June 2026
And increasingly, emotionally immature minds are unable to distinguish fantasy, ideology and consequence from reality itself.
—Editorial, Boston Herald, 1 June 2026
Thiel’s vision of tech saving the world through unloosed, Saruman-style AI industrialists would be far more compelling if so many of these tech giants were not such strangely immature and insecure people.
—Nate Anderson, ArsTechnica, 26 May 2026
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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For young travelers, Paintbox and Paintbox Petite are the resort’s exclusive clubs for children ages 5 to 12 and 2 to 5.—
Condé Nast,
Condé Nast Traveler,
11 June 2026
-
Big surf from a previous swell contributed to a drowning Saturday off Dana Point and, on Wednesday afternoon, the search continued for a young girl swept off the sand Tuesday evening in Laguna Beach.—
Laylan Connelly,
Oc Register,
11 June 2026
Adjective
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Democrats could dismiss this line of attack as childish and homophobic.—
Hanna Rosin,
The Atlantic,
11 June 2026
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Garrincha was characterised as childish and moronic in psychological tests commissioned by the Brazilian federation before that tournament in Sweden and was then left out of their first two games.—
Jack Lang,
New York Times,
28 May 2026
Adjective
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This inexperienced crew of 20-somethings takes on unorthodox jobs to build their brand and pay rent.—
Peter Debruge,
Variety,
10 Dec. 2025
-
Gay or not, Scott clearly is inexperienced with caring for bottoms.—
Tom Smyth,
Vulture,
5 Dec. 2025
Adjective
-
In 1956, Robert Heinlein published his juvenile novel Time for the Stars, which is about twin brothers, one of whom goes on a voyage to the stars while the other remains on Earth.—
New Atlas,
New Atlas,
8 Dec. 2025
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But solutions to the problem are debated among Tarrant County officials and juvenile justice advocates.—
Kamal Morgan,
Fort Worth Star-Telegram,
8 Dec. 2025
Adjective
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Women with thyroid disorders or a history of disordered eating should consult a clinician first, as should pregnant or breastfeeding women, adolescent girls and those under high chronic stress.—
Allison Palmer,
Kansas City Star,
10 June 2026
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Women with thyroid disorders, a history of disordered eating, high chronic stress, adolescent girls and anyone pregnant or breastfeeding should consult a clinician before starting.—
Allison Palmer,
Charlotte Observer,
10 June 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 17 Jun. 2026.
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