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With great force or energy; powerfully; efficaciously. "You are potently opposed." Shak.

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. The powerful grace that lies In herbs, plants, stones, and their true qualities. Shak.

Having superior force or influence; efficacious; persuasive. Shak. Saints shall assist thee with prevailing prayers. Rowe.

lants 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.

s of a bell, that segment against which the clapper strikes, being the part which is most efficacious in producing the sound. See Illust. of Bell. -- Sound post. (Mus.) See Sounding post, under Sounding.

Efficacious in the highest degree; effectual; controlling; as, a sovereign remedy. Dryden. Such a sovereign influence has this passion upon the regulation of the lives and actions of men. South. Sovereign state, a state which administers its own government, and is not dependent upon, or subject to, another power.…

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. Nothing is supposed that can supersede the known laws of natural motion. Bentley.

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.

; capable of being justified, defended, or supported; not weak or defective; sound; good; efficacious; as, a valid argument; a valid objection. An answer that is open to no valid exception. I. Taylor.

To make efficacious; to give virtue of efficacy. [Obs.] Harvey.

Having power or efficacy; powerfully operative; efficacious; potent. [Obs.] Chaucer. Lifting up his virtuous staff on high, He smote the sea, which calméd was with speed. Spenser. Every virtuous plant and healing herb. Milton.