efficacy

Fetched 2026-10-26 (cache).

Synonyms: efficace, inefficacy, efficacity, coefficacy

Antonyms: efficace, inefficacy, efficacity, coefficacy

Related words from Datamuse; suggestions, not definitions.

Noun

1. The [[ability]] to [[produce]] a [[desired]] [[effect]] under [[ideal]] [[testing]] [[condition]]s.
2. A [[degree]] of [[ability]] to [[produce]] a [[desired]] [[effect]]; [[effectiveness]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.