1
as in young
being in the early stage of life, growth, or development
immature frogs are called "tadpoles"
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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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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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Examples Sentences
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Recent Examples of immature
The mysteries are poorly constructed, the writing hacky and immature.
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Nina Metz, Chicago Tribune, 26 Sep. 2024
During the show’s run, Kevin was sometimes considered selfish and immature, especially when compared to some of the gentler members of the Pearson clan.
—Toria Sheffield, People.com, 28 Oct. 2024
Adult human beings—even the callous, tone-deaf, emotionally immature ones—demonstrate an understanding of death that is remarkable in its sophistication.
—Kathryn Schulz, The New Yorker, 28 Oct. 2024
The immature or nymph stage is similar in shape but more red than adult bugs.
—Arricca Elin Sansone, Southern Living, 17 Oct. 2024
See all Example Sentences for immature 
Nina Metz, Chicago Tribune, 26 Sep. 2024
During the show’s run, Kevin was sometimes considered selfish and immature, especially when compared to some of the gentler members of the Pearson clan.
—Toria Sheffield, People.com, 28 Oct. 2024
Adult human beings—even the callous, tone-deaf, emotionally immature ones—demonstrate an understanding of death that is remarkable in its sophistication.
—Kathryn Schulz, The New Yorker, 28 Oct. 2024
The immature or nymph stage is similar in shape but more red than adult bugs.
—Arricca Elin Sansone, Southern Living, 17 Oct. 2024
See all Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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Trump's youngest son reportedly advised his dad to make appearances with popular streamers and podcasters, including Joe Rogan.Savannah Kuchar, USA TODAY, 7 Dec. 2024
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While grieving the loss of his young cousin, who died in 2021 after ingesting a pain pill laced with fentanyl, Webb said that dealers who knowingly peddle potentially lethal drugs are nothing short of murderers.Andrew Baggarly, The Athletic, 6 Dec. 2024
Adjective
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Lotte is further displaced by the surreal environment and uses a childish game to vent her fury, sparking an unexpected, primal outpouring of emotions amongst the other mothers.Alex Ritman, Variety, 29 Nov. 2024
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But before dismissing this aspiration as childish dreaming, consider that Forbes’ newest employer ranking found that this dream often lives on into adulthood.Heather Newman, Forbes, 26 Nov. 2024
Adjective
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Orcas in the vicinity of a 6-meter-long juvenile whale shark, which is weakly swimming at the surface.Katie Hunt, CNN, 29 Nov. 2024
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Hawks said relief from record-high homicides has been overshadowed by concerns about juvenile crime.Lorraine Mirabella, Baltimore Sun, 29 Nov. 2024
Adjective
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Puberty blockers stop the body from making testosterone and estrogen to delay the changes of puberty, giving the adolescent more decision-making time.Maureen Groppe, The Courier-Journal, 3 Dec. 2024
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An adolescent often wonders why the world seems to be conspiring against them.Russell Shaw, The Atlantic, 25 Oct. 2024
Thesaurus Entries Near immature
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 19 Dec. 2024.
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