2
strengthen(verb, advance, increase, raise, rise)
2
survive(verb, support, advance, keep, maintain)
2
swell(verb, go, cover, advance, increase)
2
tack on(verb, expression, advance, increase, open)
2
thicken(verb, advance, increase, open, develop)
2
tighten(verb, go, cover, open, run)
2
unfurl(verb, take, cover, increase, open)
2
wax(verb, advance, increase, open, develop)
1
add to(verb, expression, take, cover, increase)
1
aggravate(verb, advance, increase, raise, rise)
1
annex(verb, advance, increase, raise, rise)
1
approve(verb, support, help, keep, maintain)
1
arrest(verb, hold, keep, block, stay)
1
assist(verb, support, help, keep, maintain)
1
back(verb, support, help, keep, maintain)
1
bankroll(verb, support, help, keep, maintain)
1
bar(verb, hold, keep, block, stay)
1
be conspicuous(verb, extend, dominate, bulge, protrude)
1
be dilatory(delay, hesitate, postpone, dawdle, adjourn)
1
be profuse(open, expand, stretch, widen)
10 years ago|10k views|share |citing 
APASmart Define. (2016). prolong thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/prolong/thesaurus/synonyms
ChicagoSmart Define. 2016. "prolong thesaurus" https://smartdefine.org/prolong/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, prolong thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/prolong/thesaurus/synonyms>.
MLASmart Define. "prolong thesaurus" 17 February 2016. Web. 22 September 2026. <https://smartdefine.org/prolong/thesaurus/synonyms>