Underbite is valid Scrabble Word

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

Definitions for UNDERBITE in dictionary:

Words related to UNDERBITE

underbit11 underbites13 underbiting15 underbitten14
Find what other words can be done using letters: "underbite"
https://scrabble-word.com/finder/underbite
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