അർത്ഥം : Marked by qualities giving the power to produce an intended effect.
							ഉദാഹരണം : 
							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.അർത്ഥം : Producing or capable of producing an intended result or having a striking effect.
							ഉദാഹരണം : 
							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.
							
പര്യായപദങ്ങൾ : effective, effectual
Not producing an intended effect.
An ineffective teacher.