Prolong
Prolong verb - Lengthen or extend in duration or space.
Usage example: prolong the treatment of the patient
Sustain is a synonym for prolong in carry on topic. In some cases you can use "Sustain" instead a verb "Prolong".
Nearby Words: prolongation, prolonging
Sustain
Mutual synonyms
Common collocations
Cite this Source
Sustain and Prolong. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/prolong/sustain
Prolong & Sustain. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/prolong/sustain>.
Sustain or Prolong. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/prolong/sustain.
Google Ngram Viewer shows how "prolong" and "sustain" have occurred on timeline