Inferably is valid Scrabble Word

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

Definitions for INFERABLY in dictionary:

Words related to INFERABLY

infer8 inferable14
Find what other words can be done using letters: "inferably"
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