Synonyms and Antonyms of efficacious (ĕf&stress;ĭ-kāshəs)

effective effectual efficient forcible potent powerful useful vigorous productive capable active prevalent valid virtuous

inefficacious inefficient unproductive useless unsuccessful incapable ineffective

emetogenic thrive non-addictive potentized

efficacious ₂₁

coiffes ₁₅ offices ₁₅ suffice ₁₅

coiffe ₁₄ office ₁₄ facies ₁₁ fauces ₁₁ fiasco ₁₁ ficoes ₁₁ fucose ₁₁ accuse ₁₀ caseic ₁₀

caffs ₁₃ coffs ₁₃ cuffs ₁₃ scoff ₁₃ scuff ₁₃ fiefs ₁₁ fifes ₁₁ cafes ₁₀ coifs ₁₀ cuifs ₁₀ faces ₁₀ fices ₁₀ ficus ₁₀ focus ₁₀ cisco ₉ cocas ₉ cosec ₉ cusec ₉ secco ₉ cause ₇ cosie ₇ saice ₇ sauce ₇

caff ₁₂ coff ₁₂ cuff ₁₂ effs ₁₀ fief ₁₀ fife ₁₀ offa ₁₀ offs ₁₀ cafe ₉ cafs ₉ coif ₉ cuif ₉ face ₉ fice ₉ fico ₉ fisc ₉ foci ₉ fuci ₉ ceca ₈ coca ₈ feus ₇ foes ₇ fuse ₇ oafs ₇ safe ₇ seif ₇ sofa ₇ aces ₆ asci ₆ case ₆ ciao ₆ cues ₆ ecos ₆ ecus ₆ ices ₆ ocas ₆ sice ₆ soca ₆

aff ₉ eff ₉ iff ₉ off ₉ caf ₈ efs ₆ fas ₆ fes ₆ feu ₆ fie ₆ foe ₆ fou ₆ ifs ₆ oaf ₆ ace ₅ cis ₅ cos ₅ cue ₅ eco ₅ ecu ₅ ice ₅ oca ₅ sac ₅ sec ₅ sic ₅ soc ₅ ais ₃ eau ₃ oes ₃ ose ₃ sae ₃ sau ₃ sea ₃ sei ₃ sou ₃ sue ₃ use ₃

ef ₅ fa ₅ fe ₅ if ₅ of ₅ ae ₂ ai ₂ as ₂ es ₂ is ₂ oe ₂ oi ₂ os ₂ si ₂ so ₂ us ₂