Piarists is valid Scrabble Word

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

Definitions for PIARISTS in dictionary:

Words related to PIARISTS

piarist9
Find what other words can be done using letters: "piarists"
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