Boo is valid Scrabble Word

Is boo a scrabble word?
Official Scrabble Players Dictionary YES
Official Tournament and Club Word List YES
Collins Scrabble Words YES
Is boo valid Words with Friends?
Words with Friends YES

Definitions for BOO in dictionary:

Words related to BOO

booed8 booh9 booing9 boos6

How to use BOO in a sentence

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