126 entries under sustain topic. ×

37
extend(verb, go, cover, advance, increase)
27
protract(verb, support, take, go, help)
25
lengthen(verb, take, go, cover, advance)
21
continue(verb, support, take, help, cover)
18
draw out(verb, expression, phrasal verb, take, go)
12
keep up(verb, expression, phrasal verb, support, control)
10
maintain(verb, support, help, advance, keep)
8
carry on(verb, expression, phrasal verb, take, cover)
7
keep(verb, support, hold, control, maintain)
7
last(verb, take, cover, advance, increase)
7
persist(verb, advance, maintain, delay, continue)
7
preserve(verb, support, control, help, keep)
6
endure(verb, advance, maintain, continue, extend)
6
keep going(verb, expression, support, control, help)
5
keep alive(verb, expression, support, help, keep)
5
persevere(verb, control, advance, keep, maintain)
5
retain(verb, support, control, keep, continue)
4
confirm(verb, support, help, keep, maintain)
4
drag on(verb, expression, phrasal verb, extend)
4
go on(verb, expression, phrasal verb, take, cover)
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APASmart Define. (2016). prolong thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/prolong/thesaurus/synonyms
ChicagoSmart Define. 2016. "prolong thesaurus" https://smartdefine.org/prolong/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, prolong thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/prolong/thesaurus/synonyms>.
MLASmart Define. "prolong thesaurus" 17 February 2016. Web. 28 September 2026. <https://smartdefine.org/prolong/thesaurus/synonyms>