efficacious
[ ef-i-key-shuhs ]
/ ˌɛf ɪˈkeɪ ʃəs /
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adjective
capable of having the desired result or effect; effective as a means, measure, remedy, etc.: The medicine is efficacious in stopping a cough.
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Origin of efficacious
OTHER WORDS FROM efficacious
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021
How to use efficacious in a sentence
British Dictionary definitions for efficacious
efficacious
/ (ˌɛfɪˈkeɪʃəs) /
adjective
capable of or successful in producing an intended result; effective as a means, remedy, etc
Derived forms of efficacious
efficaciously, adverbefficaciousness, nounWord Origin for efficacious
C16: from Latin efficāx powerful, efficient, from efficere to achieve; see effect
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
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