Efficacious

//ˌɛf.ɪˈkeɪ.ʃəs//

Synonyms for "efficacious" (59 found)

Ranked by relevance and common usage.

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

7 relation types

Translations

29 translations across 16 languages.

Powered by Wiktionary

Ancient Greek

2 entries
  • ἀνύσιμος adj (effective — see also effective)
  • ἐνεργητικός adj (effective — see also effective)

Chinese

1 entries
  • lêng adj (effective — see also effective)

Chinese Mandarin

4 entries
  • 奏效 adj (effective — see also effective)
  • 有效 adj (effective — see also effective)
  • 療效好 /疗效好 adj (effective — see also effective)
  • 管用 adj (effective — see also effective)

Dutch

2 entries
  • effectief adj (effective — see also effective)
  • efficiënt adj (effective — see also effective)

Finnish

1 entries
  • tehokas adj (effective — see also effective)

French

1 entries
  • efficace adj (effective — see also effective)

German

1 entries
  • wirksam adj (effective — see also effective)

Ido

1 entries
  • efikiva adj (effective — see also effective)

Irish

1 entries
  • éifeachtúil adj (effective — see also effective)

Latin

1 entries
  • efficax adj (effective — see also effective)

Norwegian Bokmål

1 entries
  • effektfull adj (effective — see also effective)

Russian

2 entries
  • де́йственный adj (effective — see also effective)
  • эффекти́вный adj (effective — see also effective)

Spanish

3 entries
  • efectivo adj (effective — see also effective)
  • eficaz adj (effective — see also effective)
  • presentáneo adj (effective — see also effective)

Swedish

2 entries
  • effektiv adj (effective — see also effective)
  • verksam adj (effective — see also effective)

Tatar

1 entries
  • нәтиҗәле adj (effective — see also effective)

Vietnamese

3 entries
  • có hiệu lực adj (effective — see also effective)
  • hữu hiệu adj (effective — see also effective)
  • ép phê adj (effective — see also effective)

Sample sentences

6 total sentences available.

Tatoeba + Wiktionary

Goldman Sachs, the American financial powerhouse, is trying to factor into its investment decisions and counsel all possible Omicron outcomes — from a worst-case scenario of greater virulence and vaccine-evasion to the nice surprise that the vaccines remain efficacious, and Omicron turns out to be more benign than its forerunner.

Source: tatoeba (10876610)

This medicine is efficacious.

Source: wiktionary

For, that the ordure, which continually gathers on the skin, would ſoon ſtop the pores of it, if the ſweat were not furniſht with ſome efficacious diſſolvent to open and pierce them.

Source: wiktionary

"I see," said he, with a smile, "that you, like myself, are trying the effect of this sweet evening for the headach. I have already found it very efficacious, and so, I think, have you,"—again smiling, as he noticed the deep blush which his sudden appearance had produced.

Source: wiktionary

Showing 4 of 6 available sentences.

More for "efficacious"

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.