Hang up
Hang up verb - Cause to be hanging or suspended.
Make firm
Cite this Source
Make firm and Hang up. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/hang_up/make_firm
Hang up & Make firm. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/hang_up/make_firm>.
Make firm or Hang up. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/hang_up/make_firm.
Google Ngram Viewer shows how "hang up" and "make firm" have occurred on timeline