Bittered is valid Scrabble Word

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

Definitions for BITTERED in dictionary:

Words related to BITTERED

bitter8 bittering12 bitters9
Find what other words can be done using letters: "bittered"
https://scrabble-word.com/finder/bittered
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