Synonyms & related words for efficacious

Find synonyms, related words, and the definition of efficacious — including effective, effectual, efficient, potent, useful, serviceable. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to efficacious

Explore words related to efficacious — words associated with it, words that go with it, and its nearest matches in meaning. Related words include efficaciousness, effectualness, effectivity, efficacy, effectuality, effectuate, inefficacious, effectiveness. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for efficacious

Common synonyms for efficacious include effective, effectual, efficient, potent, useful, serviceable, practical, competent — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does efficacious come from?

The word efficacious breaks down into one root of Latin origin: the root fic-, from Latin facio (“make, do”). Explore each root to see other English words built from the same source.