efficacious
/ˌɛf.ɪˈkeɪ.ʃəs/US/ˌɛf.əˈkeɪ.ʃəs/
efficacious adjective: effective; possessing efficacy.
Adjective
efficacious (comparative more efficacious, superlative most efficacious)
- Effective; possessing efficacy.
- This medicine is efficacious.
- 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.1669 August 25, “[An Accompt of Some Books.] III. Ottonis Tachenii Hippocrates Chymicus. Venetiis in 12º.”, in Philosophical Transactions: Giving Some Accompt of the Present Undertakings, Studies and...
- Synonyms:
- effective
- Antonyms:
- inefficacious
efficacious meaning in Marathi, Urdu, Malayalam and Kannada
efficacious in Marathi
- efficacious
- रामबाण rāmbāṇ
efficacious in Urdu
- فائدہ مند
efficacious in Malayalam
- കൈകണ്ട, പ്രയോഗപരിജ്ഞാനമുള്ള
efficacious in Kannada
- ಫಲಕಾರಿ, ಕಾರ್ಯಸಾಧಕ, ಪರಿಣಾಮಕಾರಿಯಾದ, ಅಪೇಕ್ಷಿತ ಫಲವನ್ನು ನೀಡುವ, ನಾಟುವ
More languagesFewer languages
- efficacious in Sanskrit
- सिद्धार्थ siddhārtha
- efficacious in Vietnamese
- hữu hiệu, có hiệu lực, ép phê
Examples of efficacious in a sentence
- 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.1834, L[etitia] E[lizabeth] L[andon], chapter XXXV, in Francesca Carrara. […], volume III, London: Richard Bentley, […], (successor to...
- He would weep for hours together, and I verily believe that to the very end this spoilt child of life thought his weak tears in some way efficacious.1898, H.G. Wells, The War of the Worlds, London: William Heinemann, page 218:
- They constitute a full-grown, firmly installed national psychosis, founded, as are all psychoses, on the efficacious denial of reality.1969, Susan Sontag, “What’s Happening in America”, in Styles of Radical Will, Kindle edition, Penguin Modern Classics, published 2009...
- Their waters were deemed efficacious for eye conditions.1999, Robert Lacey, Danny Danziger, The Year 1000: What life was like at the turn of The First Millennium, London: Abacus, published 2000...
Synonyms of efficacious
Antonyms
Forms of efficacious
| comparative | more efficacious |
|---|---|
| superlative | most efficacious |
Origin of efficacious
From Old French efficacieux (whence -acious), from Latin efficāx (“efficacious”) + -ous, from efficere (“to effect, to accomplish”); see effect.
Words formed from efficacious
Words that rhyme with efficacious
- gracious
- sequacious
- tenacious
- vexatious
- hellacious
- herbaceous
- ostentatious
- rapacious
- sebaceous
- vinaceous
- vivacious
- -aceous
48 more rhymesFewer rhymes
- acanthaceous
- alsinaceous
- audacious
- capacious
- contumacious
- cretaceous
- fallacious
- farinaceous
- flirtatious
- inefficacious
- juglandaceous
- mendacious
- micaceous
- orchidaceous
- perspicacious
- pertinacious
- salacious
- saponaceous
- spacious
- strobilaceous
- veracious
- voracious
- Acacius
- acinaceous
- alliaceous
- amentaceous
- amylaceous
- annonaceous
- apocynaceous
- argillaceous
- atramentaceous
- avenaceous
- bardacious
- bulbaceous
- camphoraceous
- camphrous
- carbonaceous
- cetaceous
- cucurbitaceous
- curvaceous
- dicacious
- edacious
- erinaceous
- fabaceous
- frumentaceous
- lamentacious
- lauraceous
- liliaceous
Questions about efficacious
- What does efficacious mean?
- Efficacious means effective; possessing efficacy.
- What is efficacious in Marathi?
- Efficacious in Marathi is रामबाण (rāmbāṇ). See Efficacious meaning in Marathi.
- How do you use efficacious in a sentence?
- 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.
- What part of speech is efficacious?
- Efficacious is an adjective.
- How do you pronounce efficacious?
- Efficacious is pronounced /ˌɛf.ɪˈkeɪ.ʃəs/ (UK).
Words near efficacious in the dictionary
Source and license
Adapted from Wiktionary: efficacious (page history and authors); रामबाण (Marathi) (page history and authors); efficacious (Urdu Wiktionary) (page history and authors); efficacious (Malayalam Wiktionary) (page history and authors); efficacious (Kannada Wiktionary) (page history and authors); सिद्धार्थ (Sanskrit) (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-efficacious.wav.
Cite this entry: “efficacious.” Word.ws, https://word.ws/efficacious. Based on Wiktionary, CC BY-SA 4.0.