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most ineffective

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weak, useless adj.
useless adj.

ADJECTIVE

weak, useless

Synonyms

WEAK

abortive anticlimactic barren bootless defeasible feckless feeble forceless fruitless futile idle impotent inadequate incompetent indecisive inefficacious inefficient inept inferior innocuous inoperative invertebrate lame limited neutralized nugatory null null and void paltry powerless spineless unable unavailing unfruitful unproductive unprofitable unsuccessful vain void withered worthless

Antonyms

WEAK

competent effective effectual efficient powerful strong useful

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 feckless forceless idle inefficacious inferior innocuous inoperative lame neutralized no go no way 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.

See Examples For:

most ineffective

“It may not be the most ineffective, but it’s down there.”

From Los Angeles Times ● Oct. 31, 2026

Wednesday, those pursuits put him in early foul trouble and led to his most ineffective game of the season.

From Washington Times ● Nov. 1, 2017

“Human conception is one of the most ineffective conceptions in nature,” says Dr. Yadava Jeve, a gynecologist and fertility researcher with the UK’s University Hospitals of Leicester.

From Time ● Oct. 19, 2016

"The Future Jobs Fund has been one of the most ineffective job schemes there's been," the prime minister said.

From BBC ● Mar. 17, 2011

It was certainly the liveliest, but at the same time one of the most ineffective batteries I have seen.

From Getting Gold: a practical treatise for prospectors, miners and students by J. C. F. (Joseph Colin Frances) Johnson

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