Ad lib and Unscheduled

Ad lib

Ad lib adverb - Without advance preparation.

Unscheduled and ad lib are semantically related. In some cases you can use "Unscheduled" instead an adjective phrase "Ad lib".

Unscheduled

Unscheduled adjective - Not scheduled or not on a regular schedule.

Ad lib and unscheduled are semantically related. Sometimes you can use "Ad lib" instead an adjective "Unscheduled".
Cite this Source
Unscheduled and Ad lib. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/ad_lib/unscheduled
Ad lib & Unscheduled. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/ad_lib/unscheduled>.
Unscheduled or Ad lib. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/ad_lib/unscheduled.
Google Ngram Viewer shows how "ad lib" and "unscheduled" have occurred on timeline