Lugubriousnesses is valid word

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

Definitions for LUGUBRIOUSNESSES in dictionary:

Similar words containing LUGUBRIOUSNESSE without suffix s

lugubriousnesse18
Find what other words can be done using letters: "lugubriousnesses"
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