Not booked
Unoccupied and not booked are semantically related. In some cases you can use "Unoccupied" instead an adjective phrase "Not booked".
Unoccupied
Unoccupied adjective - Not held or filled or in use.
Not booked and unoccupied are semantically related. You can use "Not booked" instead an adjective "Unoccupied".
Mutual synonyms
Cite this Source
Unoccupied and Not booked. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/not_booked/unoccupied
Not booked & Unoccupied. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/not_booked/unoccupied>.
Unoccupied or Not booked. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/not_booked/unoccupied.
Google Ngram Viewer shows how "not booked" and "unoccupied" have occurred on timeline