efficacious反义词

1. marked by qualities giving the power to produce an intended effect;

   "written propaganda is less efficacious than the habits and prejudices...of the readers"
   "the medicine is efficacious in stopping a cough"
   

2. producing or capable of producing an intended result or having a striking effect;

   "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"
   

1.有效的；奏效的；灵验的
Something that isefficacious is effective.

efficacious的意思

e.g. The nasal spray was new on the market and highlyefficacious.
这种鼻腔喷雾剂是新上市的，非常有效。

• At present there is no convincing evidence that psychoanalytic treatment as such is efficacious.

  出自：P. Medawar