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Definitions

ineffective

[in-i-fek-tiv] / ˌɪn ɪˈfɛk tɪv /
ADJECTIVE
useless
Synonyms
STRONGEST
feeble fruitless futile impotent inadequate incompetent indecisive ineffectual inefficient inept limited null powerless unable unproductive unprofitable unsuccessful worthless
WEAK
abortive anticlimactic barren bootless defeasible emasculate epicene feckless forceless idle inefficacious inferior innocuous inoperative lame neutralized no-go not effective nugatory paltry slack-spined spineless unavailable unavailing unfruitful vain void withered
Antonyms
STRONGEST
able adequate capable competent dexterous effective effectual efficient expert fit fruitful potent powerful productive profitable skillful strong successful sufficient useful valuable worthwhile worthy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Although fact-checking can be successful in establishing the facts among people who have not already made up their minds, it is generally ineffective among true believers.

From Salon • Apr. 13, 2026

We dislike insecure bellicosity not just because it’s embarrassing, but because it is ineffective.

From Slate • Apr. 13, 2026

Although Liverpool did end up having more bodies around their own box, their press was ineffective, meaning they conceded control of the ball and ultimately the game.

From BBC • Apr. 9, 2026

Maybe that’s true — but it doesn’t mean it’s rhetorically ineffective.

From MarketWatch • Apr. 2, 2026

His theory had been sound as far as burglars, snatch thieves, and kleptomaniacs were concerned, but it had been completely ineffective regarding his friends.

From "Cannery Row" by John Steinbeck

Vocabulary lists containing ineffective

Florida's B.E.S.T. Common Prefixes: in-, im-, il-, ir-

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in-

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Novel Study: Hatchet

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