Unplanned and Unscheduled

Unplanned

Unplanned adjective - Happening by chance.

Unscheduled and unplanned are semantically related. In some cases you can use "Unscheduled" instead an adjective "Unplanned".

Unscheduled

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

Unplanned and unscheduled are semantically related. You can use "Unplanned" instead an adjective "Unscheduled".
Cite this Source
Unscheduled and Unplanned. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/unplanned/unscheduled
Unplanned & Unscheduled. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/unplanned/unscheduled>.
Unscheduled or Unplanned. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/unplanned/unscheduled.
Google Ngram Viewer shows how "unplanned" and "unscheduled" have occurred on timeline