Retainable is valid Scrabble Word

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

Definitions for RETAINABLE in dictionary:

Words related to RETAINABLE

retain6
Find what other words can be done using letters: "retainable"
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