Similar Words

— effective
— efficacy
— efficient
— hard-hitting
— impelling
— impressive
— potent
— powerful
— rough-and-ready
— stiff
— strong
— telling
— trenchant
— useful
— utile

Misspelling

eefficacious, efffficacious, efficaacious, efficacioous, efficaciou, efficaciouss, efficaciouus, efficaciouz, efficaciuos, efficacoius, efficcaccious, effiicaciious, effikakious, eficacious, ephphicacious, fficacious

Efficacious — synonyms, efficacious antonyms, definition

1. efficacious (a)

27 synonyms

adequate advantageous available cogent conclusive convincing effective effectual efficient energetic forceful forcible high influencing influential operative persuasive potent powerful prevailing • • •

2. efficacious (Adjective)

1 antonym

inefficacious

2 definitions

efficacious (Adjective) — Marked by qualities giving the power to produce an intended effect. ex. "written propaganda is less efficacious than the habits and prejudices...of the readers" ex. "the medicine is efficacious in stopping a cough"

efficacious (Adjective) — Producing or capable of producing an intended result or having a striking effect. ex. "an efficacious law"

6 see also

effectiveness effectivity effectuality effectualness efficaciousness efficacy