Curtation is valid Scrabble Word

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

Definitions for CURTATION in dictionary:

Words related to CURTATION

curtate9 curtations12
Find what other words can be done using letters: "curtation"
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