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Added 8 October 2026

infantile

/ˈɪnfəntaɪl/ adjective

Latin root: infantilis Wiktionary

adjective Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about infantile at Wordnik → Where our words come from →

Indicating a lack of maturity.
childish tantrums
Of or relating to infants or infancy.
infantile paralysis
Being or befitting or characteristic of an infant.
infantile games

Origin

Mid-15th century, "pertaining to infants," from Latin infantilis (“pertaining to an infant”), equivalent to infant + -ile, from īnfāns. Sense of "infant-like" is from 1772.

From Wiktionary, via Kaikki.org (CC BY-SA)

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