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

Yet my first response was a childish pride that Dad had been deemed important enough to attract Hoover’s attention.

— Literary Hub, Literary Hub, 26 Oct. 2026
There has always been a childish aspect to him — in a good way — and his curiosity hasn’t dimmed even as his age has advanced.

— Samantha Conti, Footwear News, 23 Oct. 2026

Definition of childish

Adjective

Many of us have watched the debate about links between social media use and adolescent mental health run for more than a decade without consensus, thanks in part to the lack of necessary measurement infrastructure to inform policymakers.

— Ned Cooper, STAT, 26 Oct. 2026
This month, the brand has introduced a sixth scent with Havana Tonka—a decadent fragrance with nothing adolescent about it.

— Conçetta Ciarlo, Vogue, 23 Oct. 2026

Definition of adolescent

Adjective

Proceedings opened this week in a case that’s shone a spotlight on Japan’s treatment of juvenile suspects.

— Hanako Montgomery, CNN Money, 24 Oct. 2026
That was the case this past weekend, as footage of bands of juvenile cows dashing through the streets of Kansas City stampeded across the internet.

— Marina Bolotnikova, Vox, 24 Oct. 2026

Definition of juvenile

Browse Nearby Words

infant

infantile

infantilized

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“Infantile.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/infantile. Accessed 29 Oct. 2026.

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Synonyms of infantile

adjective

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