Prolong
Prolong verb - To make longer.
To keep up and prolong are semantically related. In some cases you can replace phrase "To keep up" with "Prolong", this terms are similar.
Nearby Words: prolongation, prolonging
To keep up
Prolong and to keep up are semantically related. You can use "Prolong" instead a verb phrase "To keep up".
Mutual synonyms
Related pairs
Cite this Source
To keep up and Prolong. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/prolong/to_keep_up
Prolong & To keep up. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/prolong/to_keep_up>.
To keep up or Prolong. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/prolong/to_keep_up.
