Treasonableness is valid Scrabble Word

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

Definitions for TREASONABLENESS in dictionary:

Words related to TREASONABLENESS

treason7
Find what other words can be done using letters: "treasonableness"
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