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
Making the most of his spindly body and LaGuardia High School–bred smirk, Chalamet uses his inescapable boyishness completely to his advantage, bringing an immature audacity to the classic in-over-his-head operator.
—
Joe Reid, Vulture, 1 Dec. 2025
Neuroblastoma is a rare cancer that develops in immature nerve tissue, typically affecting children under the age of 5.
—Alyce Collins, MSNBC Newsweek, 30 Nov. 2025
Hand-weeding or applying appropriate herbicides when the weedy plants are young and immature will give you the best results.
—Mary Marlowe Leverette, Southern Living, 30 Nov. 2025
The financial services industry has been slow to recognize this shift, often dismissing Gen Z’s preferences as temporary or immature.
—Nick Molnar, Fortune, 13 Nov. 2025
See All Example Sentences for immature
Joe Reid, Vulture, 1 Dec. 2025
Neuroblastoma is a rare cancer that develops in immature nerve tissue, typically affecting children under the age of 5.
—Alyce Collins, MSNBC Newsweek, 30 Nov. 2025
Hand-weeding or applying appropriate herbicides when the weedy plants are young and immature will give you the best results.
—Mary Marlowe Leverette, Southern Living, 30 Nov. 2025
The financial services industry has been slow to recognize this shift, often dismissing Gen Z’s preferences as temporary or immature.
—Nick Molnar, Fortune, 13 Nov. 2025
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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Most people who get sick recover within a week, but infections can be severe in young children, older adults and people with weakened immune systems.—
Kiki Intarasuwan,
CBS News,
15 Jan. 2026
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Yu says his early experiences led him to chase achievement as a way of protecting a younger version of himself.—
Ernestine Siu,
CNBC,
15 Jan. 2026
Adjective
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When Smith drives us in the golf cart, hunched close to the wheel, a look of childish mischief spreads over his face.—
Sam Kestenbaum,
Vulture,
2 Jan. 2026
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The ensuing power struggle between Woody and Buzz threatens to put their owner’s childish things away forever in Pixar’s debut feature.—
Chris Snellgrove,
Entertainment Weekly,
26 Dec. 2025
Adjective
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Ten of the top 15 quarterbacks in the portal have already committed, and after that top tier, many of the remaining quarterbacks available are either young, inexperienced passers from Power 4 programs or starters from Group of 5 or FCS schools.—
Sam Khan Jr,
New York Times,
10 Jan. 2026
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According to the University of Massachusetts Global, teacher turnover results in a large number of inexperienced teachers being placed in classrooms, meaning more money is put toward recruiting, hiring and training.—
Jennah Pendleton,
Sacbee.com,
9 Jan. 2026
Adjective
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Meanwhile, there is an ongoing investigation by the attorney general into possible civil rights abuses in the juvenile detention facilities.—
Lucas Robinson,
San Diego Union-Tribune,
13 Jan. 2026
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The approach has been used by schools and juvenile and criminal justice systems, as well as nations grappling with large-scale atrocities.—
Megan O’Matz,
ProPublica,
13 Jan. 2026
Adjective
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The Centers for Disease Control and Prevention (CDC) announced major changes to its childhood and adolescent immunization schedule, an age-by-age guide for health care providers on when to vaccinate children to protect them from preventable diseases.—
Liz Regalia,
Parents,
8 Jan. 2026
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The show channels a certain energetic, zany sense of humor viewers could recognize from their own adolescent friendships and antics, culminating in a five-season run and a 2021–2023 revival on Paramount+.—
Will Harris,
Entertainment Weekly,
4 Jan. 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 20 Jan. 2026.
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