Mumsier is valid Scrabble Word

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

Definitions for MUMSIER in dictionary:

Words related to MUMSIER

mumsiest12 mumsy12

Similar words containing MUMSI without suffix er

mumsies11 mumsiest12 mumsiness13 mumsinesses15
Find what other words can be done using letters: "mumsier"
https://scrabble-word.com/finder/mumsier
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