Assister is valid Scrabble Word

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

Definitions for ASSISTER in dictionary:

Words related to ASSISTER

assist6 assisters9
Find what other words can be done using letters: "assister"
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