Unitarities is valid Scrabble Word

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

Definitions for UNITARITIES in dictionary:

Words related to UNITARITIES

unitarity12
Find what other words can be done using letters: "unitarities"
https://scrabble-word.com/finder/unitarities
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