adjective🔗ShareIncapable of having the intended consequence."The herbal remedy proved inefficacious at relieving his headache, as it did nothing to lessen the pain. "outcomeabilityqualitynegativefunctionsystemplanprocessChat with AIVocabulary GamePractice Reading
adjective🔗ShareNot effective."The doctor warned that the old cough syrup might be inefficacious against my persistent cough, and suggested a stronger medication. "outcomefunctionabilityqualityChat with AIVocabulary GamePractice Reading
