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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.

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

From MarketWatch • Apr. 2, 2026

Fernandez signed a guilty plea to life without the possibility of parole but later filed a resentencing petition, arguing that she was coerced into the plea and that her state-appointed defense attorney provided ineffective counsel.

From Los Angeles Times • Mar. 31, 2026

She said due to ineffective responses from school leaders, there were too many occasions when teaching and learning were being disrupted.

From BBC • Mar. 24, 2026

While the Strategic Petroleum Reserve holds 415 million barrels, traders warn a release may be ineffective due to vessel availability.

From Barron's • Mar. 3, 2026

"What was that, a dream? What was ineffective about that crowd?"

From "Invisible Man" by Ralph Ellison

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.