6
enlarge(verb, advance, increase, open, develop)
6
upturn(noun, act, advance, increase, raise)
6
wave(noun, rush, swell, flow, current)
5
build(verb, advance, increase, develop, run)
5
epidemic(noun, disease, plague, outburst, outbreak)
5
flood(noun, movement, sign, rush, swell)
5
hike(noun, verb, act, advance, increase)
5
increment(noun, advance, increase, raise, rise)
5
leap(noun, drop, increase, fall, rise)
5
mounting
5
rising
5
snowball(verb, increase, develop, extend, swell)
5
spate
4
access(noun, raise, gain, rise, development)
4
aggrandizement(noun, act, advance, increase, raise)
4
amplification(noun, act, increase, swell, expansion)
4
ascend(verb, advance, increase, raise, swell)
4
expansion(noun, increase, raise, rise, growth)
4
multiply(verb, advance, increase, open, develop)
4
outbreak(noun, movement, sign, rush, swell)
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APASmart Define. (2015). upsurge thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/upsurge/thesaurus/synonyms
ChicagoSmart Define. 2015. "upsurge thesaurus" https://smartdefine.org/upsurge/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, upsurge thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/upsurge/thesaurus/synonyms>.
MLASmart Define. "upsurge thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/upsurge/thesaurus/synonyms>