efficacious
[ ef-i-key-shuh s ]
/ ˌɛf ɪˈkeɪ ʃəs /
adjective
capable of having the desired result or effect; effective as a means, measure, remedy, etc.: The medicine is efficacious in stopping a cough.
Origin of efficacious
OTHER WORDS FROM efficacious
Words nearby efficacious
effervesce,
effervescence,
effervescent,
effervescent salt,
effete,
efficacious,
efficacity,
efficacy,
efficiency,
efficiency apartment,
efficiency expert
Example sentences from the Web for efficacious
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, adverb efficaciousness, nounWord Origin for efficacious
C16: from Latin
efficāx powerful, efficient, from
efficere to achieve; see
effect