unknown is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

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Meanings

Adjective (COMPARABLE)

Comparative Superlative
more unknown most unknown
    (sometimes postpositive) Not known; unidentified; not well known.

Noun (COUNTABLE)

Singular Plural
unknown unknowns
    (algebra) 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.

unknown is a Scrabble valid word


unknown is an iScramble valid word


unknown is an QuickWords valid word


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