Synonyms of effectiveness

effectiveness

noun

1

as in conclusiveness

the capacity to persuade

the "guilty" verdict was all the proof needed of the effectiveness of the prosecutor's closing argument

Synonyms & Similar Words

• conclusiveness
• validity
• strength
• authority
• persuasiveness
• credibility
• soundness
• forcefulness
• cogency
• impact
• persuasion
• power
• convincingness
• suasiveness
• force
• influence
• appeal
• weight
• believability
• might
• definitiveness
• punch
• seductiveness
• authoritativeness
• sway

Antonyms & Near Antonyms

• ineffectiveness
• inconclusiveness
• invalidity
• ineffectuality
• unsoundness
• ineffectualness
• weakness
• shakiness
• powerlessness
• feebleness

2

as in efficacy

the power to produce a desired result

the huge upsurge in sales pretty much demonstrated the effectiveness of the new ad campaign

Synonyms & Similar Words

• efficacy
• efficaciousness
• efficiency
• productiveness
• ability
• efficacity
• effectualness
• capability
• edge
• strength
• capacity
• potency
• puissance

Antonyms & Near Antonyms

• ineffectiveness
• inefficiency
• inability
• ineffectuality
• inadequacy
• ineffectualness
• incompetence
• incompetency
• inadequateness

3

as in impact

the quality of an utterance that provokes interest and produces an effect

your writing lacks effectiveness because practically every sentence is in the passive voice

Synonyms & Similar Words

• impact
• importance
• significance
• force
• point
• punch
• forcefulness
• appeal
• cogency
• attraction
• payoff
• charm
• fascination

Example Sentences

Recent Examples of effectiveness

Calcium and vitamin D are often supplemented together for bone health, but research shows mixed results on their effectiveness in improving bone mineral density or reducing fracture risk. — Jennifer Lefton, Verywell Health, 3 Sep. 2026

Milwaukee police officials have stood by the technology's effectiveness, despite months of criticism and two officers facing criminal charges for misuse of the system. — David Clarey, jsonline.com, 3 Sep. 2026

A lot of the show’s effectiveness had to do with viewers eager to play along. — Emily Nussbaum, New Yorker, 3 Sep. 2026

Monitoring is essential for evaluating contamination and the effectiveness of remediation efforts. — Encyclopedia Britannica, 3 Sep. 2026

In August, Novo launched a study on effectiveness and safety of lower maintenance doses of the Wegovy pill, but the study could take months, even years, to complete. — Ken Alltucker, USA Today, 2 Sep. 2026

Product margins are also ignored when evaluating campaign effectiveness. — John Readman, Forbes.com, 1 Sep. 2026

Heading into September, Counsell’s late-inning options include de facto closer Jacob Webb, returning closer Daniel Palencia and a mystery man that could depend on Edward Cabrera’s health and effectiveness. — Paul Sullivan, Chicago Tribune, 31 Aug. 2026

Jia said there are challenges ahead for developing an ethical framework for AI chatbots, which include issues related to privacy, safety and lack of long-term evidence on the effectiveness of the new technology. — Livi Stanford, Hartford Courant, 31 Aug. 2026