Toothinesses is valid Scrabble Word

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

Definitions for TOOTHINESSES in dictionary:

Words related to TOOTHINESSES

toothiness13
Find what other words can be done using letters: "toothinesses"
https://scrabble-word.com/finder/toothinesses
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