unknown is a valid English word

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

Meanings

Adjective (COMPARABLE)

(sometimes postpositive) Not known; unidentified; not well known.
• Synonym: anonymous, unfamiliar, uncharted, undiscovered, unexplored, unidentified, unnamed, unrecognized, unrevealed, unascertained, obscure, unsung

Noun (COUNTABLE)

(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

• International English (Sowpods) - The word is valid in Scrabble ✔
• US English (TWL06) - The word is valid in Scrabble ✔
• 00 points

unknown is an iScramble, QuickWords valid word

unknown

• The word is valid in iScramble ✔
• The word is valid in QuickWords ✔
• 00 points

Same letters words (Anagrams)

• none

Same letters plus one

• UNKNOWEN
• UNKNOWNS

Same letters minus one

• UNKNOW