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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Recent Examples of infantile
But they’re born with severe brain malformations, eye abnormalities and a debilitating form of epilepsy called infantile spasms.
—
Erika Edwards, NBC news, 4 Oct. 2025
Muscle Man is a deeply ironic book, creating a vast chasm between Harold’s strongman self-image and his infantile powers of self-expression.
—Robert Rubsam, Vulture, 18 Sep. 2025
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
See All Example Sentences for infantile
Erika Edwards, NBC news, 4 Oct. 2025
Muscle Man is a deeply ironic book, creating a vast chasm between Harold’s strongman self-image and his infantile powers of self-expression.
—Robert Rubsam, Vulture, 18 Sep. 2025
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
See All Example Sentences for infantile
Recent Examples of Synonyms for infantile
Adjective
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Hence the childish clown imagery in an era before coulrophobia was widely talked about.—
Fielding Buck,
Oc Register,
16 Feb. 2026
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However, Robbie’s performance keeps Cathy’s childish nature intact with many obsessive outbursts.—
Ellise Shafer,
Variety,
13 Feb. 2026
Adjective
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Adults have a waxy cottony-looking coating, while immature bugs are smaller but similar.—
Arricca Elin SanSone,
Southern Living,
14 Feb. 2026
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The film’s vintage patina doesn’t detract from rising actor Will Price’s confident performance as an immature mobster who prefers bitcoin to stacks of Benjamins.—
Amy Nicholson,
Los Angeles Times,
30 Jan. 2026
Adjective
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Yet despite these gains, new infections remain a concern, particularly among adolescent girls and young women.—
ABC News,
ABC News,
21 Feb. 2026
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As a child and adolescent psychiatrist, Zishan Khan Khan.—
Beth Ann Mayer,
Parents,
20 Feb. 2026
Adjective
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The controversial law, Assembly Bill 218, has led to thousands of claims over abuse that took place in schools, juvenile halls and foster homes.—
Rebecca Ellis,
Los Angeles Times,
21 Feb. 2026
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The more effective and responsible approach is to advocate for the North Carolina Department of Public Safety to construct, staff, and operate a dedicated juvenile facility in Mecklenburg County.—
Charlotte Observer,
Charlotte Observer,
20 Feb. 2026
Cite this Entry
“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 25 Feb. 2026.
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