Scrabble Word Checker
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25 points

EFFICACIOUSNESS is validvalid

the quality of being efficacious [n]

193,758 of 196,601 in NWL2023·also valid in CSW24

the quality of being successful in producing an intended result, also EFFECTIVENESS, EFFICACY [n]

74,777 of 280,887 in CSW24·also valid in NWL2023