280 entries under extend topic. ×

2
hike(verb, increase, open, develop)
2
hold
2
jack up(verb, expression, increase, develop)
2
keep at(expression, advance, maintain, continue, stay)
2
keep going(verb, expression, take, advance, open)
2
keep on(expression, advance, maintain, continue, stay)
2
keep the ball rolling(expression, idiom, advance, maintain, continue)
2
last(verb, take, cover, advance, increase)
2
linger(verb, advance, maintain, continue, stay)
2
live on(expression, advance, maintain, continue, stay)
2
loiter(verb, advance, maintain, continue, stay)
2
make headway(expression, advance, maintain, continue, stay)
2
mount(verb, advance, increase, open, develop)
2
move ahead(expression, advance, maintain, continue, stay)
2
mushroom(verb, set, cover, increase, open)
2
never cease(expression, advance, maintain, continue, stay)
2
open(verb, take, go, set, cover)
2
outlast(verb, advance, maintain, continue, stay)
2
outlive(verb, advance, maintain, continue, stay)
2
outstretch(verb, set, cover, spread)
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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>