Frothless is valid Scrabble Word

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

Definitions for FROTHLESS in dictionary:

Words related to FROTHLESS

froth11
Find what other words can be done using letters: "frothless"
https://scrabble-word.com/finder/frothless
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