Grebos is valid Scrabble Word

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

Definitions for GREBOS in dictionary:

Words related to GREBOS

grebo8

Similar words containing GREBO without suffix s

grebo8 greboes10
Find what other words can be done using letters: "grebos"
https://scrabble-word.com/finder/grebos
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