Synonyms of ineffective

ineffective

adjective

ˌi-nə-ˈfek-tiv 

1

as in unsuccessful

not producing the desired result

an ineffective effort to reduce unemployment that only spurred inflation

Synonyms & Similar Words

• unsuccessful
• inefficient
• counterproductive
• ineffectual
• inexpedient
• worthless
• feckless
• useless
• futile
• pointless
• unprofitable
• inefficacious
• unavailing
• abortive
• nonproductive
• unproductive
• fruitless
• hamstrung
• profitless
• bootless

Antonyms & Near Antonyms

• effective
• efficient
• efficacious
• effectual
• expedient
• operant
• successful
• beneficial
• useful
• helpful
• worthwhile
• profitable
• productive
• ultraefficient
• availing

2

as in futile

producing no results

an ineffective medication that will be denied FDA approval

Synonyms & Similar Words

• unsuccessful
• futile
• useless
• ineffectual
• unprofitable
• unproductive
• unavailing
• insufficient
• in vain
• abortive
• fruitless
• inadequate
• worthless
• vain
• impossible
• inefficacious
• of no avail
• meaningless
• profitless
• empty
• barren
• not worth the candle
• pointless
• otiose
• no dice
• bootless
• valueless
• hollow
• lost
• lacking
• hopeless
• idle
• counterproductive
• unattainable
• no-win
• wanting

Antonyms & Near Antonyms

• effective
• efficient
• successful
• profitable
• productive
• deadly
• potent
• fruitful
• virtuous
• adequate
• meaningful
• sufficient
• worthwhile
• efficacious
• effectual
• practical
• feasible
• applicable
• functional
• workable
• usable
• practicable
• realizable

Example Sentences

Recent Examples of ineffective

Chidester requested a proceeding known as a Ginther Hearing, which considers claims from a defendant over ineffective legal representation. — Paula Wethington, CBS News, 28 Oct. 2026

An independent data monitoring committee will review data accumulated during the trial while additional vaccine candidates are added to the evaluation and others are discontinued if they are shown to be ineffective. — ABC News, 27 Oct. 2026

Serbs across the country embraced the Student List, who are viewed as fresh faces in politics and are not tied to Serbia’s traditional political opposition, which is perceived as ineffective and corrupt by a lot of the voters. — Chris Massaro, FOXNews.com, 27 Oct. 2026

The Gang Suppression Force replaced the Multinational Security Support Mission, seen as largely ineffective, in April. — Widlore Mérancourt, Washington Post, 26 Oct. 2026