Efficacious

ˌefəˈkāSHəs

Adjective

  • (Of something inanimate or abstract) Successful in producing a desired or intended result; effective.

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Example Sentences

“My neighbor swears by an efficacious herbal tea for curing sleepless nights.”

“The coach’s pep talk was efficacious in boosting team morale.”

“Meditation has been shown to be an efficacious method for reducing stress.”

Word Origin

Latin, early 16th century

Why this word?

“Efficacious” comes from the Latin “efficere,” meaning “accomplish.” It’s also the root word of “effect” — something that is efficacious, or done successfully, is effective. “Efficacious” is the adjective form, but it can also be used as an adverb (“I would like to work efficaciously”) or a noun (“I was impressed by the solution’s efficaciousness”).

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Learn a new word Redivivus

ˌredəˈvīvəs