Irreplaceable
Irreplaceable adjective - Impossible to replace.
Lacking and irreplaceable are semantically related. In some cases you can use "Lacking" instead an adjective "Irreplaceable".
Lacking
Lacking adjective - Not coming up to an expected measure or meeting a particular need.
Irreplaceable and lacking are semantically related. Sometimes you can use "Irreplaceable" instead an adjective "Lacking".
Mutual synonyms
Cite this Source
Lacking and Irreplaceable. (2016). Retrieved 2026, August 08, from https://thesaurus.plus/related/irreplaceable/lacking
Irreplaceable & Lacking. N.p., 2016. Web. 08 Aug. 2026. <https://thesaurus.plus/related/irreplaceable/lacking>.
Lacking or Irreplaceable. 2016. Accessed August 08, 2026. https://thesaurus.plus/related/irreplaceable/lacking.
Google Ngram Viewer shows how "irreplaceable" and "lacking" have occurred on timeline