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...

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

Supersede :: Supersede (v. t.) To make void, inefficacious, or useless, by superior power, or by coming in the place of; to set aside; to render unnecessary; to suspend; to stay..

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

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

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

Theriaca :: Theriaca (n.) An ancient composition esteemed efficacious against the effects of poison; especially, a certain compound of sixty-four drugs, prepared, pulverized, and reduced by means of honey to an electuary; -- called also theriaca Andromachi, and Venice treacle..

Potent :: Potent (a.) Producing great physical effects; forcible; powerful' efficacious; as, a potent medicine..

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

Antiodontalgic :: Antiodontalgic (a.) Efficacious in curing toothache.

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..

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

Barberry :: Barberry (n.) A shrub of the genus Berberis, common along roadsides and in neglected fields. B. vulgaris is the species best known; its oblong red berries are made into a preserve or sauce, and have been deemed efficacious in fluxes and fevers. The bark dyes a fine yellow, esp. the bark of the root..

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

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

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

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

Inflential :: Inflential (a.) Exerting or possessing influence or power; potent; efficacious; effective; strong; having authority or ascendency; as, an influential man, station, argument, etc..

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

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

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

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