Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of efficacious is as below...

Operative :: Operative (a.) Producing the appropriate or designed effect; efficacious; as, an operative dose, rule, or penalty..

Drastic :: Drastic (a.) Acting rapidly and violently; efficacious; powerful; -- opposed to bland; as, drastic purgatives..

Sovereign :: Sovereign (a.) Efficacious in the highest degree; effectual; controlling; as, a sovereign remedy..

Valid :: Valid (a.) Having sufficient strength or force; founded in truth; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection..

Efficacious :: Efficacious (n.) Possessing the quality of being effective; productive of, or powerful to produce, the effect intended; as, an efficacious law..

Forcible :: Forcible (a.) Possessing force; characterized by force, efficiency, or energy; powerful; efficacious; impressive; influential..

Virtuous :: Virtuous (a.) Having power or efficacy; powerfully operative; efficacious; potent.

Potential :: Potential (a.) Being potent; endowed with energy adequate to a result; efficacious; influential.

Avaiably :: Avaiably (adv.) In an available manner; profitably; advantageously; efficaciously.

Inefficaciousness :: Inefficaciousness (n.) Want of effect, or of power to produce the effect; inefficacy..

Prevailing :: Prevailing (a.) Having superior force or influence; efficacious; persuasive.

Antipyretic :: Antipyretic (a.) Efficacious in preventing or allaying fever.

Inefficacious :: Inefficacious (a.) Not efficacious; not having power to produce the effect desired; inadequate; incompetent; inefficient; impotent.

Antisyphilitic :: Antisyphilitic (a.) Efficacious against syphilis.

Effectually :: Effectually (adv.) With effect; efficaciously.

Inefficaciously :: Inefficaciously (adv.) without efficacy or effect.

Anticatarrhal :: Anticatarrhal (a.) Efficacious against catarrh.

Energetical :: Energetical (a.) Exhibiting energy; operating with force, vigor, and effect; forcible; powerful; efficacious; as, energetic measures; energetic laws..

Snakeroot :: Snakeroot (n.) Any one of several plants of different genera and species, most of which are (or were formerly) reputed to be efficacious as remedies for the bites of serpents; also, the roots of any of these..

Powerful :: Powerful (a.) Full of power; capable of producing great effects of any kind; potent; mighty; efficacious; intense; as, a powerful man or beast; a powerful engine; a powerful argument; a powerful light; a powerful vessel..

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