Disprover is valid Scrabble Word

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

Definitions for DISPROVER in dictionary:

Words related to DISPROVER

disprove14 disprovers16
Find what other words can be done using letters: "disprover"
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