Lacking
Lacking adjective - Not coming up to an expected measure or meeting a particular need.
Unconfident and lacking are semantically related In some cases you can use "Unconfident" instead an adjective "Lacking".
Unconfident
Lacking and unconfident are semantically related in doubtful topic. Sometimes you can use "Lacking" instead an adjective "Unconfident".
Cite this Source
Unconfident and Lacking. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/lacking/unconfident
Lacking & Unconfident. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/lacking/unconfident>.
Unconfident or Lacking. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/lacking/unconfident.
Google Ngram Viewer shows how "lacking" and "unconfident" have occurred on timeline