Incommutability is valid Scrabble Word

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

Definitions for INCOMMUTABILITY in dictionary:

Similar words containing COMMUTABIL without suffix ity and without prefix in

commutability24 commutabilities23
Find what other words can be done using letters: "incommutability"
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