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efficacious

adjective

Synonyms and Antonyms of efficacious

producing or capable of producing a desired result
  • Taking a cookie break while studying is one of the most efficacious ways of rejuvenating the mind that I have ever discovered.
Synonyms of efficacious

effective, effectual, efficient, fruitful, operative, potent, productive
Words Related to efficacious

hyperefficient, ultraefficient

adequate, capable, competent

accomplished, adept, consummate, experienced, expert, masterly, practiced (also practised), proficient, skilled, skillful, versed, veteran, virtuoso

cogent, convincing, killer, sound, striking, telling, valid

active, dynamic

useful, working

applicable, feasible, functional, practicable, practical, realizable, usable (also useable), workable
Near Antonyms of efficacious

counterproductive

incapable, incompetent, inexperienced, inexpert, unqualified, unseasoned, unskilled, unskillful

abortive, bootless, futile, vain

empty, hollow, idle, pointless, unavailing, unprofitable, unsuccessful

inoperative, worthless
Antonyms of efficacious

fruitless, ineffective, ineffectual, inefficient, inoperative, unfruitful, unproductive, useless

Synonym Discussion of efficacious

effective, effectual, efficient, efficacious mean producing or capable of producing a result. effective stresses the actual production of or the power to produce an effect.
    • an effective rebuttal
effectual suggests the accomplishment of a desired result especially as viewed after the fact.
    • the measures to stop the pilfering proved effectual
efficient suggests an acting or a potential for action or use in such a way as to avoid loss or waste of energy in effecting, producing, or functioning.
    • an efficient small car
efficacious suggests possession of a special quality or virtue that gives effective power.
    • a detergent that is efficacious in removing grease

Learn More about efficacious

  1. See words that rhyme with efficacious Dictionary: Definition of efficacious Spanish Central: Translation of efficacious Nglish: Translation of efficacious for Spanish speakers

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