98 entries under open topic. ×

2
slap on(verb, expression, advance, increase)
2
spread out(verb, expression, take, go, cover)
2
tack on(verb, expression, advance, increase)
2
unfold(verb, take, go, set, cover)
2
unfurl(verb, take, set, cover, increase)
2
unroll(verb, take, go, set, cover)
2
upsurge(verb, increase, develop, extend)
1
be profuse(expand, stretch, widen)
1
be prolix(expand, stretch, widen)
1
bolster(verb, increase, develop, extend)
1
bulk up(verb, expression, increase, develop)
1
crane(verb, take, go, cover, increase)
1
detail(verb, increase, develop, extend)
1
disperse(verb, set, cover, increase)
1
embellish(verb, increase, develop, extend)
1
expatiate(verb, increase, develop, extend)
1
explicate(verb, increase, develop, extend)
1
fan out(verb, expression, take, cover, increase)
1
fill(verb, go, cover, run)
1
flow(verb, set, cover, increase)
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APASmart Define. (2016). lengthen thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/lengthen/thesaurus/synonyms
ChicagoSmart Define. 2016. "lengthen thesaurus" https://smartdefine.org/lengthen/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2016, lengthen thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/lengthen/thesaurus/synonyms>.
MLASmart Define. "lengthen thesaurus" 9 March 2016. Web. 27 September 2026. <https://smartdefine.org/lengthen/thesaurus/synonyms>