Unknown is valid Scrabble Word

Is unknown a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is unknown valid Words with Friends?
Words with Friends YES

Definitions for UNKNOWN in dictionary:

Words related to UNKNOWN

unbeknownst20 unkenned13 unknownness18 unknowns15 unweened12 unwist9

Words that contain UNKNOWN

unknowns15 unknownness18 unknownnesses20

How to use UNKNOWN in a sentence

Find what other words can be done using letters: "unknown"
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