Smoothnesses is valid Scrabble Word

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

Definitions for SMOOTHNESSES in dictionary:

Words related to SMOOTHNESSES

smoothness15
Find what other words can be done using letters: "smoothnesses"
https://scrabble-word.com/finder/smoothnesses
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