316 entries under increase topic. ×

6
rouse(verb, advance, develop, disturb)
6
swell(verb, advance, open, develop)
5
step up(verb, expression, phrasal verb, support, advance)
5
accentuate(verb, raise, severe, boost)
5
add(verb, support, establish, extend)
5
broaden(verb, take, cover, advance)
5
emphasize(verb, raise, severe, strengthen)
5
gather(verb, get, promote, gain)
5
lengthen(verb, take, cover, advance)
5
maximize
5
perk up(verb, expression, phrasal verb, get, advance)
5
supplement(verb, take, cover, advance)
5
widen(verb, take, cover, advance)
4
accelerate(verb, advance, develop, raise)
4
dilate(verb, take, cover, advance)
4
distend(verb, advance, open, develop)
4
double(verb, advance, raise, rise)
4
heat up(verb, expression, decline, raise)
4
levitate(verb, advance, raise, swell)
4
set up(verb, expression, phrasal verb, form, support)
11 years ago|13k views|share |citing 
APASmart Define. (2015). heighten thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/heighten/thesaurus/synonyms
ChicagoSmart Define. 2015. "heighten thesaurus" https://smartdefine.org/heighten/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, heighten thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/heighten/thesaurus/synonyms>.
MLASmart Define. "heighten thesaurus" 10 April 2015. Web. 22 September 2026. <https://smartdefine.org/heighten/thesaurus/synonyms>