Dumbnesses is valid Scrabble Word

Is dumbnesses a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is dumbnesses valid Words with Friends?
Words with Friends YES

Definitions for DUMBNESSES in dictionary:

Words related to DUMBNESSES

dumbness13
Find what other words can be done using letters: "dumbnesses"
https://scrabble-word.com/finder/dumbnesses
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