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
These immature cells can develop into different types of blood cells, including white blood cells (WBCs), central to immune function.8
Getting sufficient and consistent sleep can help make your body more resistant to disease and infection.
—
Mark Gurarie, Verywell Health, 9 Jan. 2025
If desired, scatter some microgreens (tiny immature greens) on top of salad.
—Cathy Thomas, Orange County Register, 1 Jan. 2025
Building on the work of Dr. Shinya Yamanaka of Japan, who discovered that specialized cells could be reprogrammed back to immature stem cells, Watt and his collaborators have taken this work several steps further.
—Dr. Marc Siegel Fox News, Fox News, 24 Dec. 2024
And with a two-year age range, some of the projects might end up feeling too immature or too difficult depending on your child’s developmental stage.
—Jessica Booth, Parents, 16 Dec. 2024
See all Example Sentences for immature 
Mark Gurarie, Verywell Health, 9 Jan. 2025
If desired, scatter some microgreens (tiny immature greens) on top of salad.
—Cathy Thomas, Orange County Register, 1 Jan. 2025
Building on the work of Dr. Shinya Yamanaka of Japan, who discovered that specialized cells could be reprogrammed back to immature stem cells, Watt and his collaborators have taken this work several steps further.
—Dr. Marc Siegel Fox News, Fox News, 24 Dec. 2024
And with a two-year age range, some of the projects might end up feeling too immature or too difficult depending on your child’s developmental stage.
—Jessica Booth, Parents, 16 Dec. 2024
See all Example Sentences for immature
Recent Examples of Synonyms for immature
Adjective
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And fellow young Republicans are celebrating having one of their own join the executive branch for the first time.—
Savannah Kuchar,
USA TODAY,
11 Feb. 2025
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Questioning the boundaries of Mexican identity is a recurring concern amongst younger Mexican artists working today.—
Harrison Jacobs,
ARTnews.com,
10 Feb. 2025
Adjective
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And also Gary's behavior back towards Glenn on that was just quite a bit childish.—
Gina Ragusa,
EW.com,
3 Feb. 2025
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Your brother’s behavior is passive-aggressive and childish.—
Jeanne Phillips,
The Mercury News,
12 Jan. 2025
Adjective
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Systemic juvenile idiopathic arthritis (sJIA) is a distinctive subtype of juvenile idiopathic arthritis, characterized by fever and arthritis, often accompanied by rash, according to the National Institute of Health.—
Stephanie Giang-Paunon,
Fox News,
7 Feb. 2025
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He was charged with first-degree grand theft vehicle and taken to a juvenile corrections center.—
Milena Malaver,
Miami Herald,
4 Feb. 2025
Adjective
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The move swept up many resources on the CDC website, ranging from data on adolescent health and infectious disease to clinical guidelines on reproductive care and HIV.—
Pien Huang,
NPR,
6 Feb. 2025
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Dawn Bounds, PhD, an Assistant Professor at the University of California, Irvine Sue & Bill Gross School of Nursing, specializes in social media and adolescent mental health.—
Melissa Willets,
Parents,
3 Feb. 2025
Thesaurus Entries Near immature
Cite this Entry
“Immature.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/immature. Accessed 20 Feb. 2025.
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