Synonyms for "inefficacy" (22 found)

Ranked by relevance and common usage.

Closest matches (5)

absurdityemptinessfailurefatuityfutility

Strong matches (6)

impotenceinadequacyinanityincapacityineffectivenessineffectuality

Related words (11)

Noun(3 words)

inefficaciousnessinefficacityuneffectualness

pointlessnessrat racetrivialityunproductivenessuselessnessvanityvicious circleweakness

Related word relations

OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.

4 relation types

More general

3 entries

ineffectivenessineffectualityineffectualness

Antonyms

1 entries

efficacy

is a

1 entries

ineffectiveness

related to

1 entries

ineffective

Translations

5 translations across 5 languages.

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Irish

1 entries

• ainéifeacht noun (the condition of being ineffective)

Italian

1 entries

• inefficacia noun (the condition of being ineffective)

Manx

1 entries

• neuvree noun (the condition of being ineffective)

Polish

1 entries

• bezskuteczność noun (the condition of being ineffective)

Scottish Gaelic

1 entries

• mì-thairbhe noun (the condition of being ineffective)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.