adjective🔗ShareInefficace, vainNot having the desired effect; ineffectual"The bug spray was ineffective; the mosquitoes were still biting us. "Le spray anti-moustiques était inefficace ; les moustiques nous piquaient toujours.outcomeabilityfunctionqualityChat with AIVocabulary GamePractice Reading
adjective🔗ShareInefficace, incompétent, insuffisantLacking in ability; incompetent or inadequate"The new student found the teacher's explanation of the math problem completely ineffective; she still didn't understand it. "La nouvelle élève a trouvé l'explication du professeur concernant le problème de maths complètement inefficace ; elle ne l'a toujours pas compris.abilityqualitycharacterfunctionChat with AIVocabulary GamePractice Reading