Drop off
Drop off verb - To grow less in scope or intensity especially gradually.
Usage example: my interest in photography has dropped off over the years
Cite this Source
Drain and Drop off. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/drop_off/drain
Drop off & Drain. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/drop_off/drain>.
Drain or Drop off. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/drop_off/drain.
Google Ngram Viewer shows how "drop off" and "drain" have occurred on timeline