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Added 9 October 2026

unknown

/ʌn(ˈn)əʊn/ adjective

In Latin: incognitus, ignoratus, ignotus Wiktionary

adjective Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about unknown at Wordnik → Where our words come from →

Not known; unidentified; not well known.
The concept has existed since times unknown.

noun

A variable (usually x, y or z) whose value is to be found.
Any thing, place, or situation about which nothing is known; an unknown fact or piece of information.
A person of no identity; a nonentity.

verb

past participle of unknow

Origin

From Middle English *unknowen, *uniknowen, uniknowe, from Old English unġecnāwen (“unknown”), equivalent to un- + known.

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

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