Untreatably is valid Scrabble Word

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

Definitions for UNTREATABLY in dictionary:

Similar words containing TREATAB without suffix ly and without prefix un

treatable11 entreatable13 untreatable13 treatability17 treatabilities16
Find what other words can be done using letters: "untreatably"
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