Unplayably is valid Scrabble Word

Is unplayably a scrabble word?
Official Scrabble Players Dictionary NO
Official Tournament and Club Word List YES
Collins Scrabble Words NO
Is unplayably valid Words with Friends?
Words with Friends YES

Definitions for UNPLAYABLY in dictionary:

Similar words containing PLAYAB without suffix ly and without prefix un

playable15 unplayable17 displayable19 playability21 playabilities20
Find what other words can be done using letters: "unplayably"
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