Plexing is valid Scrabble Word

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

Definitions for PLEXING in dictionary:

Words related to PLEXING

plex13
Find what other words can be done using letters: "plexing"
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