Overdiagnosing is valid Scrabble Word

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

Definitions for OVERDIAGNOSING in dictionary:

Similar words containing OVERDIAGNOS without suffix ing

overdiagnose17 overdiagnoses18 overdiagnosis18 overdiagnosed19
Find what other words can be done using letters: "overdiagnosing"
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