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Added 9 October 2026

adult

/ˈæd.ʌlt/ noun

In Latin: adultus, adulta Wiktionary

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

A fully developed person from maturity onward.
Any mature animal.

adjective

(of animals) fully developed.
an adult animal
Designed to arouse lust.
pornographic films and magazines

Origin

From French adulte, from Latin adultus (“grown up”), perfect passive participle of adolescō (“to grow up”). Compare adolescent.

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

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