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
Additionally, some dogs, particularly breeds with extreme infantile traits (such as pugs and French bulldogs), may appear as helpless, harmless, and innocent as small children.
—
Laura Baisas, Popular Science, 22 May 2025
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
See All Example Sentences for infantile
Laura Baisas, Popular Science, 22 May 2025
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
See All Example Sentences for infantile
Recent Examples of Synonyms for infantile
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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After potting, pick off any flowers or immature fruit.—
Lauren Landers,
Better Homes & Gardens,
4 Nov. 2025
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Move over manchildren, there are some women who would like to take your immature crown.—
Kelly Lawler,
USA Today,
30 Oct. 2025
Adjective
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No adolescent defiance or child’s anguish was visible on his face now.—
George Packer,
The Atlantic,
6 Nov. 2025
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Read more about the adolescent biology of sleep patterns.—
NPR,
NPR,
5 Nov. 2025
Adjective
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Conversely, the percentage of respondents who think juvenile offenders should be treated like adults has fallen from 65% in 2000 to a record-low 41% this year, the report said.—
Aspen Pflughoeft,
Miami Herald,
10 Nov. 2025
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All face charges of providing material support to a foreign terrorist organization, and additional juvenile cases may be under seal.—
Jasmine Baehr,
FOXNews.com,
9 Nov. 2025
Cite this Entry
“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 11 Nov. 2025.
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