Thiasuses is valid Scrabble Word

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

Definitions for THIASUSES in dictionary:

Words related to THIASUSES

thiasus10
Find what other words can be done using letters: "thiasuses"
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