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Meaning of word efficacious from English dictionary with examples, synonyms and antonyms.

efficacious   adjective

Meaning : Marked by qualities giving the power to produce an intended effect.

Example : Written propaganda is less efficacious than the habits and prejudices...of the readers.
The medicine is efficacious in stopping a cough.

Lacking the power to produce a desired effect.

Laws that are inefficacious in stopping crime.
inefficacious

Meaning : Producing or capable of producing an intended result or having a striking effect.

Example : An air-cooled motor was more effective than a witch's broomstick for rapid long-distance transportation.
Effective teaching methods.
Effective steps toward peace.
Made an effective entrance.
His complaint proved to be effectual in bringing action.
An efficacious law.

Synonyms : effective, effectual

Not producing an intended effect.

An ineffective teacher.
Ineffective legislation.
ineffective, ineffectual, uneffective

Efficacious meaning in Bengali (Bangla).