101 entries under advance topic. ×

7
aggrandize(verb, take, cover, increase)
6
boost(verb, take, cover, increase)
6
thicken(verb, increase, open, develop)
5
enhance(verb, take, cover, increase)
5
heighten(verb, take, cover, increase)
5
wax(verb, increase, open, develop)
4
keep up(verb, expression, maintain, continue)
4
pad(verb, take, go, cover)
4
project(verb, maintain, continue, stay)
4
reach(verb, go, set, cover)
3
maintain(verb, continue, stay, extend)
3
redouble(verb, increase, raise, rise)
3
reinforce(verb, increase, raise, rise)
3
snowball(verb, increase, develop, raise)
3
supplement(verb, take, cover, increase)
3
sustain(verb, maintain, continue, stay)
2
abide(verb, maintain, continue, stay)
2
aggravate(verb, increase, raise, rise)
2
build(verb, increase, develop, raise)
2
build up(verb, expression, increase, raise)
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APASmart Define. (2016). lengthen thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/lengthen/thesaurus/synonyms
ChicagoSmart Define. 2016. "lengthen thesaurus" https://smartdefine.org/lengthen/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2016, lengthen thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/lengthen/thesaurus/synonyms>.
MLASmart Define. "lengthen thesaurus" 9 March 2016. Web. 29 September 2026. <https://smartdefine.org/lengthen/thesaurus/synonyms>