Stumbly is valid Scrabble Word

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

Definitions for STUMBLY in dictionary:

Words related to STUMBLY

stumblier13 stumbliest14
Find what other words can be done using letters: "stumbly"
https://scrabble-word.com/finder/stumbly
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