Grubble is valid Scrabble Word

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

Definitions for GRUBBLE in dictionary:

Words related to GRUBBLE

grabble12 grubbled14 grubbles13 grubbling15

Words that contain GRUBBLE

grubbled14 grubbles13
Find what other words can be done using letters: "grubble"
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