2
spread out(expression, take, cover, increase, open)
2
stick up(verb, phrasal verb, elevation)
2
tack on(verb, expression, advance, increase, open)
2
thicken(verb, advance, increase, open, develop)
2
throw up(verb, expression, form, make, raise)
2
triple(verb, advance, increase, raise, rise)
2
underline(verb, intensify)
2
unfold(verb, take, cover, increase, open)
2
unfurl(verb, take, cover, increase, open)
2
unroll(verb, take, cover, increase, open)
2
upcast
2
upheave
2
uphoist
2
uphold(verb, raise, lift, uplift)
2
uprise(verb, increase, rise, issue, swell)
1
abound(verb, advance, turn, raise, produce)
1
accent(verb, increase, raise, severe, boost)
1
accord(verb, give, agree, fit, provide)
1
accumulate(verb, increase, develop, rise, issue)
1
add fuel(verb, expression, increase, encourage, raise)
<1678910>
11 years ago|13k views|share |citing 
APASmart Define. (2015). heighten thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/heighten/thesaurus/synonyms
ChicagoSmart Define. 2015. "heighten thesaurus" https://smartdefine.org/heighten/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, heighten thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/heighten/thesaurus/synonyms>.
MLASmart Define. "heighten thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/heighten/thesaurus/synonyms>