Prolong and Sustain

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

Sustain verb - Lengthen or extend in duration or space.
Usage example: We sustained the diplomatic negotiations as long as possible

Prolong is a synonym for sustain in continue topic. You can use "Prolong" instead a verb "Sustain", if it concerns topics such as keep up.

Nearby Word: sustaining

Common collocations

flame prolong flame sustain flame
power prolong power sustain power
life prolong life sustain life
attack prolong attack sustain attack
Other words: conflict, species, magic, immortality, existence, war.
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