Ad lib
Ad lib adverb - Without advance preparation.
Unproficient and ad lib are semantically related. In some cases you can use "Unproficient" instead an adjective phrase "Ad lib".
Unproficient
Ad lib and unproficient are semantically related. Sometimes you can use "Ad lib" instead an adjective "Unproficient".
Mutual synonyms
Cite this Source
Unproficient and Ad lib. (2016). Retrieved 2026, August 03, from https://thesaurus.plus/related/ad_lib/unproficient
Ad lib & Unproficient. N.p., 2016. Web. 03 Aug. 2026. <https://thesaurus.plus/related/ad_lib/unproficient>.
Unproficient or Ad lib. 2016. Accessed August 03, 2026. https://thesaurus.plus/related/ad_lib/unproficient.
Google Ngram Viewer shows how "ad lib" and "unproficient" have occurred on timeline