Mephitisms is valid Scrabble Word

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

Definitions for MEPHITISMS in dictionary:

Words related to MEPHITISMS

mephitism18

Similar words containing MEPHITISM without suffix s

mephitism18
Find what other words can be done using letters: "mephitisms"
https://scrabble-word.com/finder/mephitisms
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