1
as in young
being in the early stage of life, growth, or development
immature frogs are called "tadpoles"
Synonyms & Similar Words
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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
Synonyms & Similar Words
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
Too naive, too immature to understand.
—
Hua Hsu, New Yorker, 20 Apr. 2026
The landscaping was sparse and immature.
—Literary Hub, 14 Apr. 2026
The two did a nice job portraying teenagers who go back and forth from sincere to ridiculously immature, but the best part was their horror when Jost fired back.
—Omar L. Gallaga, Los Angeles Times, 12 Apr. 2026
Simandl was then rushed to Tampa General Hospital for urgent treatment and was diagnosed with acute promyelocytic leukemia (APL) — a rare and aggressive form of leukemia where immature white blood cells multiply uncontrollably, preventing the body from producing healthy blood cells.
—Tereza Shkurtaj, PEOPLE, 11 Apr. 2026
See All Example Sentences for immature
Hua Hsu, New Yorker, 20 Apr. 2026
The landscaping was sparse and immature.
—Literary Hub, 14 Apr. 2026
The two did a nice job portraying teenagers who go back and forth from sincere to ridiculously immature, but the best part was their horror when Jost fired back.
—Omar L. Gallaga, Los Angeles Times, 12 Apr. 2026
Simandl was then rushed to Tampa General Hospital for urgent treatment and was diagnosed with acute promyelocytic leukemia (APL) — a rare and aggressive form of leukemia where immature white blood cells multiply uncontrollably, preventing the body from producing healthy blood cells.
—Tereza Shkurtaj, PEOPLE, 11 Apr. 2026
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
-
The 76ers have one of the best young backcourts in the league in Tyrese Maxey and VJ Edgecombe, and the expectations of the Philadelphia fan base are high.—
Tony Jones,
New York Times,
21 May 2026
-
Apart from the Syrian with the fire extinguisher, there were no young or middle-aged men.—
Rania Abouzeid,
New Yorker,
21 May 2026
Adjective
-
The whole tweet story now feels almost like a childish tale.—
Georg Szalai,
HollywoodReporter,
13 May 2026
-
The feeling was less substantial, more childish, like expecting someone to walk in and scold you for doing something wrong and not knowing where to hide.—
Francesco Pacifico,
The Dial,
12 May 2026
Adjective
-
Another risk is infection from non-sterile equipment, which might happen if the procedure is done by inexperienced technicians or in non-medical settings, Hazan says.—
Erica Sweeney,
Time,
11 May 2026
-
The other strong selling point is that the inexperienced videographer doesn't have to fiddle with a load of settings before recording.—
David Szondy
May 09,
New Atlas,
9 May 2026
Adjective
-
The juvenile bear’s wander across campus late Thursday and early Friday prompted an advisory to students and a search by UC Davis police and wardens from the California Department of Fish and Wildlife as well as Yolo County Animal Control.—
Allison Gibson,
Sacbee.com,
15 May 2026
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Over the last 20 years, scientists have documented an increasing number of juvenile great white sharks cruising waters off Southern California beaches.—
Ian James,
Los Angeles Times,
14 May 2026
Adjective
-
The film follows Dudley, an adolescent frog desperate to break free from the iron grip of his father Arthur, the mayor of frog town.—
Naman Ramachandran,
Variety,
16 May 2026
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But the idea at the heart of Curry Barker’s new horror film, Obsession, has an endearingly adolescent, back-to-basics simplicity.—
Bilge Ebiri,
Vulture,
15 May 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 21 May. 2026.
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