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
Unlike older drugs, this formula safely accounts for a baby’s immature metabolism.
—
Kwesi Akonu Adom Mensah Forson, The Conversation, 26 Jan. 2026
This is really a way to tell the story from a much more immature point of view.
—Joe Lynch, Billboard, 26 Jan. 2026
But the National Association for the Advancement of Coloured People (NAACP) felt Claudette was too immature to become a constitutional test case.
—The Week Uk, TheWeek, 24 Jan. 2026
Quantum computing remains a fragmented and immature market, UBS analysts led by Madeleine Jenkins wrote in a 103-page report to clients on Monday.
—Pia Singh, CNBC, 19 Jan. 2026
See All Example Sentences for immature
Kwesi Akonu Adom Mensah Forson, The Conversation, 26 Jan. 2026
This is really a way to tell the story from a much more immature point of view.
—Joe Lynch, Billboard, 26 Jan. 2026
But the National Association for the Advancement of Coloured People (NAACP) felt Claudette was too immature to become a constitutional test case.
—The Week Uk, TheWeek, 24 Jan. 2026
Quantum computing remains a fragmented and immature market, UBS analysts led by Madeleine Jenkins wrote in a 103-page report to clients on Monday.
—Pia Singh, CNBC, 19 Jan. 2026
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
-
These are the growing number of young men who are dropouts, do not work or have meaningful or fulfilling jobs, do not marry, have no children, few friends, and live in the basement of their parents’ home.—
Peter Lucas,
Boston Herald,
26 Feb. 2026
-
Gentry Academy is a young program, which earned its own championship — in Class A — in its lone state appearance in 2021.—
Pioneer Press,
Twin Cities,
26 Feb. 2026
Adjective
-
Hence the childish clown imagery in an era before coulrophobia was widely talked about.—
Fielding Buck,
Oc Register,
16 Feb. 2026
-
However, Robbie’s performance keeps Cathy’s childish nature intact with many obsessive outbursts.—
Ellise Shafer,
Variety,
13 Feb. 2026
Adjective
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The officer said the review was needed because an inexperienced employee handled James’ initial vetting.—
Gisela Salomon,
Los Angeles Times,
27 Feb. 2026
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In the book, Krakauer is critical of the guiding companies for leading inexperienced climbers up the mountain despite the extreme dangers.—
Amanda Lee Myers,
USA Today,
26 Feb. 2026
Adjective
-
In this case, the teen will remain in juvenile detention for around 18 to 30 months.—
Conor Wight,
CBS News,
28 Feb. 2026
-
Sheriff Garry McFadden will not put forward a budget request to the county to reopen Charlotte’s former juvenile jail, according to emails between County Manager Mike Bryant and a state official.—
Ryan Oehrli
February 27,
Charlotte Observer,
27 Feb. 2026
Adjective
-
Yet despite these gains, new infections remain a concern, particularly among adolescent girls and young women.—
ABC News,
ABC News,
21 Feb. 2026
-
As a child and adolescent psychiatrist, Zishan Khan Khan.—
Beth Ann Mayer,
Parents,
20 Feb. 2026
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 2 Mar. 2026.
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