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

The traditional flu shot ranges in effectiveness from 22% to 56%, according to the Mayo Clinic. — Berkeley Lovelace Jr, NBC news, 6 Aug. 2026

One of the reasons people are reluctant to get a flu shot is because of its sometimes weak effectiveness in protecting against symptoms. — Alice Park, Time, 6 Aug. 2026

Legal and tax analysts caution that the order's effectiveness will depend on how the regulations are written. — Richard Escobedo, CBS News, 6 Aug. 2026

In these discussions, people often mistake output for effectiveness. — Monica Alvarez-Mitchell, Forbes.com, 6 Aug. 2026

Since effectiveness against water jets is a different test than submersion, some cases have multiple IP ratings. — Bestreviews, Chicago Tribune, 6 Aug. 2026

Those questions have become critical as California lawmakers, local governments, and taxpayers scrutinize the effectiveness of homelessness spending amid encampments continuing to pop up and the rising demand for transparency. — Barnini Chakraborty, The Washington Examiner, 6 Aug. 2026

Consider if the glue will be exposed to any extreme elements or temperatures since this could impact its effectiveness. — Bestreviews, Mercury News, 6 Aug. 2026

Interviewers begin to ask him whether his polarizing stature might hamper his effectiveness as a public-health spokesperson—a reasonable question. — Molly Fischer, New Yorker, 4 Aug. 2026