efficacious
adjective
capable of having the desired result or effect; effective as a means, measure, remedy, etc..
unefficacious
-
a word derived from
efficacious.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Great truths uttered by some lips might be made to seem very unefficacious.
From A Fountain Sealed by Anne Douglas Sedgwick
