1 inefficacious | Definition of inefficacious

inefficacious

adjective
in·​ef·​fi·​ca·​cious | \ (ˌ)i-ˌne-fə-ˈkā-shəs How to pronounce inefficacious (audio) \

Definition of inefficacious

: lacking the power to produce a desired effect : ineffective

Keep scrolling for more

Other Words from inefficacious

inefficaciously adverb
inefficaciousness noun

Examples of inefficacious in a Sentence

his efforts to restore the neglected houseplant back to health were belated and sadly inefficacious an inefficacious medication for a rare form of tuberculosis

First Known Use of inefficacious

1658, in the meaning defined above

Keep scrolling for more

More from Merriam-Webster on inefficacious

Thesaurus: All synonyms and antonyms for inefficacious