as in childish
having or showing the annoying qualities (as silliness) associated with children
the infantile humor that teenage boys are justly famous for
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Example Sentences
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Recent Examples of infantile
The curious case of infantile amnesia The phenomenon of not remembering anything from early childhood is known as infantile amnesia.
—
Aamir Khollam, Interesting Engineering, 21 Mar. 2025
If nothing else is done with those mice, that association will apparently be forgotten later in life due to infantile amnesia.
—John Timmer, Ars Technica, 21 Mar. 2025
For a long time, infantile amnesia was thought to be tied to an inability to make memories in infancy.
—Sam Walters, Discover Magazine, 20 Mar. 2025
If this is correct, is there a connection between song and the most basic infantile communication?
—Aaron Shattuck, Scientific American, 18 Feb. 2025
See All Example Sentences for infantile
Aamir Khollam, Interesting Engineering, 21 Mar. 2025
If nothing else is done with those mice, that association will apparently be forgotten later in life due to infantile amnesia.
—John Timmer, Ars Technica, 21 Mar. 2025
For a long time, infantile amnesia was thought to be tied to an inability to make memories in infancy.
—Sam Walters, Discover Magazine, 20 Mar. 2025
If this is correct, is there a connection between song and the most basic infantile communication?
—Aaron Shattuck, Scientific American, 18 Feb. 2025
See All Example Sentences for infantile
Recent Examples of Synonyms for infantile
Adjective
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One creator, who goes by @littlemisstippytoes on TikTok, said in a post that before tween media rose to prominence, preteens were either seen as early bloomers for looking more mature, or childish for looking their age.—
Melissa Fleur Afshar,
MSNBC Newsweek,
25 Sep. 2025
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But the series’ first season was too committed to childish things to allow the franchise to grow up.—
Roxana Hadadi,
Vulture,
24 Sep. 2025
Adjective
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Our challenge is to get the immature plant mature enough to get through summer.—
Brandee Gruener,
Southern Living,
27 Sep. 2025
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Edamame, Soybeans, and Soy Products Edamame is an immature soybean in green pods.—
Merve Ceylan,
Health,
26 Sep. 2025
Adjective
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Boys may experience greater benefits from delaying their start date compared to girls, said Ioakim Boutakidis, professor of child and adolescent studies at Cal State Fullerton.—
Erick Trevino,
AZCentral.com,
26 Sep. 2025
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Martin’s limited series — which begs for a second season — highlights why coercion and control are typically ineffective remedies for adolescent rebellion.—
Aramide Tinubu,
Variety,
25 Sep. 2025
Adjective
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The law also permits defendants as old as 21 to be held in juvenile detention facilities, instead of the typical adult centers.—
Julia Bonavita,
FOXNews.com,
29 Sep. 2025
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The Free Press' three years of reporting on dangerous conditions at Wayne County's juvenile jail continues to spur change.—
Detroit Free Press,
Freep.com,
27 Sep. 2025
Cite this Entry
“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 1 Oct. 2025.
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