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
The closest anyone has come to success for eggs has been very primitive human egg cells that are too immature to be fertilized.
—
Rob Stein, NPR, 30 Sep. 2025
The researchers produced 82 functional human oocytes, or immature egg cells, which then underwent fertilization in the lab.
—Katie Hunt, CNN Money, 30 Sep. 2025
Our challenge is to get the immature plant mature enough to get through summer.
—Brandee Gruener, Southern Living, 27 Sep. 2025
Edamame, Soybeans, and Soy Products Edamame is an immature soybean in green pods.
—Merve Ceylan, Health, 26 Sep. 2025
See All Example Sentences for immature
Rob Stein, NPR, 30 Sep. 2025
The researchers produced 82 functional human oocytes, or immature egg cells, which then underwent fertilization in the lab.
—Katie Hunt, CNN Money, 30 Sep. 2025
Our challenge is to get the immature plant mature enough to get through summer.
—Brandee Gruener, Southern Living, 27 Sep. 2025
Edamame, Soybeans, and Soy Products Edamame is an immature soybean in green pods.
—Merve Ceylan, Health, 26 Sep. 2025
See All Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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The Special Supplemental Nutrition Program for Women, Infants, and Children, or WIC, offers food benefits, breastfeeding services and nutrition education to 65,000 Arkansas women, infants and children younger than five.—
Arkansas Online,
Arkansas Online,
26 Oct. 2025
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Every young solo traveler should heed these nine tips.—
Amelia McBride,
Travel + Leisure,
26 Oct. 2025
Adjective
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The brand is seeing an upswing post-pandemic, as these childish styles, long favored in Asia-Pacific countries like Japan and South Korea, become increasingly popular in China and the West.—
Lucy Maguire,
Vogue,
30 Oct. 2025
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She’s fallen under the sway of a fashionable worldview in which logic is paramount, and the realm of emotion and magic and even dæmons is just childish fancy.—
Lev Grossman,
The Atlantic,
23 Oct. 2025
Adjective
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Senior defensive tackle Braxton Fely’s radar is already up at the chance of facing another inexperienced QB.—
Shaun Goodwin,
Idaho Statesman,
30 Oct. 2025
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In doing so, Sonny mentors a talented but inexperienced rookie named Joshua Pearce (Damson Idris) and brings an unconventional style of racing to the track.—
Tommy McArdle,
PEOPLE,
30 Oct. 2025
Adjective
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Starring Daniel Chen and based on Chen’s life, Bad Boy tells the story of Dean, who is imprisoned in a cruel juvenile detention facility.—
Max Goldbart,
Deadline,
3 Nov. 2025
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In August 2020, five orcas chased a juvenile white shark, pushed it to the surface, and flipped it onto its back.—
Aamir Khollam,
Interesting Engineering,
3 Nov. 2025
Adjective
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The Biden Administration's contrary position depended on the obvious fallacy that providing testosterone to treat a boy's endocrine disorder is the 'same treatment' as using the drug to disrupt the normal physical development of an adolescent girl suffering from psychological distress.—
Mandy Taheri,
MSNBC Newsweek,
24 Oct. 2025
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Did an adolescent Bruce really have to walk into bars and collect his father, at the urging of his mother?—
Andy Greene,
Rolling Stone,
24 Oct. 2025
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 4 Nov. 2025.
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