Stoutheartedness is valid word

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

Definitions for STOUTHEARTEDNESS in dictionary:

Words that contain STOUTHEARTEDNESS

stoutheartednesses22

Similar words containing STOUTHEARTEDNES without suffix s

stoutheartednes19 stoutheartednesses22
Find what other words can be done using letters: "stoutheartedness"
https://scrabble-word.com/finder/stoutheartedness
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