Frust is valid Scrabble Word

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

Definitions for FRUST in dictionary:

Words related to FRUST

fragment14 frusts9

Words that contain FRUST

frusta9 frusts9 frustum12 frustule11 frustums13 frustrate12 frustules12 frustrated14 frustrater13 frustrates13 frustraters14 frustrating15 frustration14 frustrations15 frustratingly20
Find what other words can be done using letters: "frust"
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