Sombernesses is valid Scrabble Word

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

Definitions for SOMBERNESSES in dictionary:

Words related to SOMBERNESSES

somberness14
Find what other words can be done using letters: "sombernesses"
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