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
When immature eggs—known as oocytes, which are eggs that have not yet fully developed to the stage where they can be fertilized—were exposed to THC at levels similar to those detected in patients, researchers observed more frequent chromosome errors.
—
Daniella Gray, MSNBC Newsweek, 9 Sep. 2025
Customer-facing systems carry the highest reputational risk when immature.
—Malana Vantyler, USA Today, 9 Sep. 2025
Instead of just collecting these animals in their adult jellyfish-like form, Prudkovsky would collect them in their immature semi-stationary form and raise them in a laboratory.
—Aspen Pflughoeft, Miami Herald, 28 Aug. 2025
The immature or nymph stage is similar in shape but more red than adult bugs.
—Arricca Elin Sansone, Southern Living, 23 Aug. 2025
See All Example Sentences for immature
Daniella Gray, MSNBC Newsweek, 9 Sep. 2025
Customer-facing systems carry the highest reputational risk when immature.
—Malana Vantyler, USA Today, 9 Sep. 2025
Instead of just collecting these animals in their adult jellyfish-like form, Prudkovsky would collect them in their immature semi-stationary form and raise them in a laboratory.
—Aspen Pflughoeft, Miami Herald, 28 Aug. 2025
The immature or nymph stage is similar in shape but more red than adult bugs.
—Arricca Elin Sansone, Southern Living, 23 Aug. 2025
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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Something has to give if the Commanders want to keep their young quarterback leading the way for years to come.—
Evan Massey,
MSNBC Newsweek,
21 Sep. 2025
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But increasingly, the planet’s biggest pro clubs are signing younger and younger players to bigger and bigger contracts that deter their release when not required, either for fear of injury or fear of losing league games in their absence.—
Mark Zeigler,
San Diego Union-Tribune,
20 Sep. 2025
Adjective
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For decades, bartenders have been defaming the Mai Tai, debasing it, making and selling versions of the drink that were childish and incomplex, saccharine and flat.—
Jason O'Bryan,
Robb Report,
13 Sep. 2025
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Although childish and superficial, his renaming the Department of Defense as the Department of War doesn’t telegraph a love of peace.—
Steven Greenhut,
Oc Register,
12 Sep. 2025
Adjective
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Clearly frustrated, Palencia gave up five runs and recorded zero outs during the ninth inning of that 6-3 loss to the Washington Nationals, a last-place team with a largely inexperienced and nondescript lineup.—
Patrick Mooney,
New York Times,
13 Sep. 2025
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Having won five straight Ryder Cups and 12 of the last 13, the American team entered as the heavy favorite despite fielding a relatively inexperienced squad.—
Tim Corlett,
Forbes.com,
11 Sep. 2025
Adjective
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As the consequences of permanent records became clear—blocking access to jobs, housing, and education—states began experimenting with mechanisms to seal or expunge certain convictions, usually for first-time or juvenile offenders.—
Walter Pavlo,
Forbes.com,
15 Sep. 2025
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Unlike natural thinning, large fire-resilient trees are typically high-graded for felling in Jackson, creating tinderboxes of 300 to 500 mostly juvenile trees per acre.—
John P. O’Brien,
Mercury News,
13 Sep. 2025
Adjective
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The film tracks Chou’s navigation of adolescent relationships, including romantic disappointment and academic pressure, as external political events amplify personal upheavals.—
Naman Ramachandran,
Variety,
20 Sep. 2025
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Her mother decided that her daughter’s lesbianism was only an adolescent phase.—
Nicole Flattery,
Harpers Magazine,
19 Sep. 2025
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 21 Sep. 2025.
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