Unsuiting is valid Scrabble Word

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

Definitions for UNSUITING in dictionary:

Words related to UNSUITING

unsuit6
Find what other words can be done using letters: "unsuiting"
https://scrabble-word.com/finder/unsuiting
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