3
uphold
2
carry on
2
continue
2
lengthen
1
bear on
0
preserve
10 years ago|179 views|share |citing 
APASmart Define. (2016). prolong thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prolong/thesaurus/broader
ChicagoSmart Define. 2016. "prolong thesaurus" https://smartdefine.org/prolong/thesaurus/broader (accessed September 22, 2026).
HarvardSmart Define 2016, prolong thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prolong/thesaurus/broader>.
MLASmart Define. "prolong thesaurus" 17 February 2016. Web. 22 September 2026. <https://smartdefine.org/prolong/thesaurus/broader>