Failed
Ineffective and failed are semantically related In some cases you can use "Ineffective" instead an adjective "Failed".
Ineffective
Ineffective adjective - Not producing the desired result.
Failed and ineffective are semantically related in unsuccessful topic. You can use "Failed" instead an adjective "Ineffective".
Mutual synonyms
Related pairs
Both words in one sentence
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Lampshaded by earlier discussion that this would be entirely ineffective but still done anyway because of some "Presidential Scientific Advisors" who apparently failed Physics 101.
Source: Film / Armageddon -
In Kinnikuman, when Screwkid stabbed his 'you've failed me' boss Big the Buddo, he was so overpowered he disintegrated due to how ineffective his attack was.
Source: No Sell -
Peri Barclay wielded two revolvers, but this proved completely ineffective as he failed to hit anyone.
Cite this Source
Ineffective and Failed. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/failed/ineffective
Failed & Ineffective. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/failed/ineffective>.
Ineffective or Failed. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/failed/ineffective.
Google Ngram Viewer shows how "failed" and "ineffective" have occurred on timeline