Discourteise is valid Scrabble Word

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

Definitions for DISCOURTEISE in dictionary:

Words related to DISCOURTEISE

discourteous15
Find what other words can be done using letters: "discourteise"
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