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What is another word for inefficacious?

297 synonyms found

Pronunciation:

[ ɪnˌɛfɪkˈe͡ɪʃəs], [ ɪnˌɛfɪkˈe‍ɪʃəs], [ ɪ_n_ˌɛ_f_ɪ_k_ˈeɪ_ʃ_ə_s]

Synonyms for Inefficacious:

Antonyms for Inefficacious:

X