Failing
Failing adjective - Below acceptable in performance.
Lacking is a synonym for failing in in the absence of topic. In some cases you can use "Lacking" instead the word "Failing" as a preposition or an adjective.
Lacking
Lacking adjective - Not coming up to an expected measure or meeting a particular need.
Mutual synonyms
Both words in one sentence
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They are vastly inferior to Truebloods, lacking their more supernatural powers and failing to attain similar levels of physical potency.
Source: Anime / Hellsing - In Sentinels of the Multiverse, after failing to defeat the heroes time and time again Omnitron determines the one thing it's lacking is a conscience, so it installs a Morality Chip itself.
Source: Morality Chip
Cite this Source
Lacking and Failing. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/failing/lacking
Failing & Lacking. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/failing/lacking>.
Lacking or Failing. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/failing/lacking.
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