Epistolical is valid Scrabble Word

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

Definitions for EPISTOLICAL in dictionary:

Similar words containing STOLIC without suffix al and without prefix epi

systolic13 apostolic13 asystolic14 diastolic12 epistolic13 apostolical15 isapostolic15 unapostolic15 apostolicism18 apostolicity19 subapostolic18 apostolically20 apostolicisms19 unapostolical17 apostolicities18 unapostolically22
Find what other words can be done using letters: "epistolical"
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