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
Among other things, his fouling out in Game 3 of the 2024 Finals against the Celtics series in a semi-intentional fit of frustration was wildly immature for a great player in his sixth season.
—
Tim Cowlishaw, Dallas Morning News, 5 Apr. 2026
Yet this widely available gourd—harvested and eaten while still immature, in fact, for ripe cucumbers are yellow and bitter—is not the entirety of the plant.
—Andrés Muedano, JSTOR Daily, 25 Mar. 2026
Preterm and low-birth-weight babies are at higher risk than full-term babies of developing NEC, potentially because of their immature digestive systems, according to the National Institutes of Health.
—Lisa Schencker, Chicago Tribune, 10 Mar. 2026
When the eggs hatch, the immature stages start feeding.
—Arricca Elin Sansone, Southern Living, 3 Mar. 2026
See All Example Sentences for immature
Tim Cowlishaw, Dallas Morning News, 5 Apr. 2026
Yet this widely available gourd—harvested and eaten while still immature, in fact, for ripe cucumbers are yellow and bitter—is not the entirety of the plant.
—Andrés Muedano, JSTOR Daily, 25 Mar. 2026
Preterm and low-birth-weight babies are at higher risk than full-term babies of developing NEC, potentially because of their immature digestive systems, according to the National Institutes of Health.
—Lisa Schencker, Chicago Tribune, 10 Mar. 2026
When the eggs hatch, the immature stages start feeding.
—Arricca Elin Sansone, Southern Living, 3 Mar. 2026
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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The virus is highly contagious and can infect nearly all young children, according to the National Foundation for Infectious Diseases (NFID).—
Angel Saunders,
PEOPLE,
16 Apr. 2026
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The Hochsteins share two young children together.—
Anna McAllister,
CBS News,
16 Apr. 2026
Adjective
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That’s as childish an expression as the show ever shares.—
Alison Herman,
Variety,
13 Apr. 2026
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The use of childish internet and video-game memes to describe violence is coarse and unworthy of the men and women who go in harm’s way.—
Eliot A. Cohen,
The Atlantic,
1 Apr. 2026
Adjective
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The Blackhawks understood that handing their defense to a group of young, inexperienced players would be a challenge after the trade deadline.—
Scott Powers,
New York Times,
15 Apr. 2026
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As New York Magazine reported last month, shifts are also crushingly long, the vast majority of managers are young and inexperienced, and contracts often end abruptly without any prior warning.—
Victor Tangermann,
Futurism,
15 Apr. 2026
Adjective
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The driver and a juvenile boy were both taken to the hospital with unknown injuries, according to the release.—
Lauren Penington,
Denver Post,
10 Apr. 2026
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Leatherman ran toward two juvenile bystanders while Selmer ran toward downtown Emmitsburg, according to documents.—
JT Moodee Lockman,
CBS News,
9 Apr. 2026
Adjective
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Narrated by Josh Gad, Orangutan introduces us to Indah, an adolescent orangutan preparing to leave her family unit for the first time and venture into the wild.—
K. Thor Jensen,
PC Magazine,
17 Apr. 2026
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Recently released from prison, coach Walt Mangian joins a local youth gym to help a ragtag team of adolescent boxers aspiring to a national championship.—
Ryan Lattanzio,
IndieWire,
16 Apr. 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 21 Apr. 2026.
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