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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Example Sentences
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Recent Examples of immature
When the eggs hatch, the immature stages start feeding.
—
Arricca Elin Sansone, Southern Living, 5 Aug. 2025
Why is the administration favoring advanced nuclear and next-gen geothermal which are commercially immature compared with wind and solar?
—Ian Dexter Palmer, Forbes.com, 4 Aug. 2025
That’s the idea of being mature or immature, right?
—Jason Jones, New York Times, 1 Aug. 2025
At the very worst, an immature 18-year-old makes a horrific decision on a whim to deface his or her torso with a tableau of repulsive images that could potentially cause medical complications later in life.
—Scott Liftman, Boston Herald, 25 July 2025
See All Example Sentences for immature
Arricca Elin Sansone, Southern Living, 5 Aug. 2025
Why is the administration favoring advanced nuclear and next-gen geothermal which are commercially immature compared with wind and solar?
—Ian Dexter Palmer, Forbes.com, 4 Aug. 2025
That’s the idea of being mature or immature, right?
—Jason Jones, New York Times, 1 Aug. 2025
At the very worst, an immature 18-year-old makes a horrific decision on a whim to deface his or her torso with a tableau of repulsive images that could potentially cause medical complications later in life.
—Scott Liftman, Boston Herald, 25 July 2025
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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For the first autopsy, an Army doctor named Kosaka made an incision into the abdominal section of the body of a young soldier.—
Literary Hub,
Literary Hub,
7 Aug. 2025
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At the time of the shooting, Scott was the best friend of Serafini's wife Erin Spohr and an occasional babysitter for the couple's two young boys.—
Chris Spargo,
People.com,
7 Aug. 2025
Adjective
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There’s something mystical about him and a little bit childish.—
Marta Balaga,
Variety,
10 June 2025
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This does not imply that college students should be taught childish skills but rather acknowledges the need to foster emotional coping skills and positive relationships throughout the academic careers of students.—
Eric Wood,
Forbes.com,
21 July 2025
Adjective
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The two worked together before entering city government on projects surrounding the juvenile justice system and youth incarceration.—
Drake Bentley,
jsonline.com,
19 Aug. 2025
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The arrest of a 13-year-old boy in connection with a series of armed carjackings and robberies across Baltimore has sparked a debate on juvenile crime and the effectiveness of the Department of Juvenile Services.—
Keith Daniels,
Baltimore Sun,
16 Aug. 2025
Adjective
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His adolescent daughter Louise was standing beneath a big top in a rural French town preparing to enter the center ring.—
April White,
JSTOR Daily,
18 Aug. 2025
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Boys Go to Jupiter captures an adolescent malaise without talking down to its teens — there is no preaching about real jobs, responsibilities, or five-year plans.—
Fran Hoepfner,
Vulture,
14 Aug. 2025
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 22 Aug. 2025.
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