INFANTILE Synonyms: 32 Similar and Opposite Words

infantile

adjective

ˈin-fən-ˌtī(-ə)l

Definition of infantile

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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Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of infantile Miami’s infantile offense can’t afford to carry this team. — Omar Kelly, Miami Herald, 12 June 2026 Not for infantile name calling. — Mike Fleming Jr, Deadline, 8 Apr. 2026 Then, there’s this rather infantile tendency for the MAGA crowd to call any content moderation an act of censorship, which is a ludicrous distortion of the truth. — Joel Khalili, Wired News, 11 Mar. 2026 The question is if his self-serving instincts overcome his infantile rage. — Arkansas Online, 9 Mar. 2026 See All Example Sentences for infantile

Recent Examples of Synonyms for infantile

Adjective

There is a playful feeling to many PATTARAPHAN pieces, but this is not childish work.

— Rachel Elspeth Gross, Forbes.com, 20 Aug. 2026
And also settling a very childish dispute between the airport and the contractors.

— Business Columnist, Los Angeles Times, 20 Aug. 2026

Definition of childish

Adjective

The report, published in December 2024, cited multiple factors, including the fast fashion business model and immature textile recycling technologies.

— Roy Stephen Canivel, Footwear News, 23 Sep. 2026
Sprouts are essentially immature, miniature plants harvested shortly after germination.

— Kim Toscano, Southern Living, 14 Sep. 2026

Definition of immature

Adjective

This brings us back to how Crohn’s is not juvenile idiopathic arthritis.

— John Mildenberger, STAT, 2 Oct. 2026
The transition from tadpole to juvenile frog is never easy — legs sprout, tails shrink and lungs develop for a life on land, all while being hunted by fish and other predators.

— ABC News, ABC News, 29 Sep. 2026

Definition of juvenile

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infant

infantile

infantilized

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“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 10 Oct. 2026.

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Synonyms of infantile

adjective

Example Sentences

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