12
hyperbole(state, understatement)
9
surge
4
addition(noun, decrease, process, adding)
4
increase(noun, rise)
3
augmentation(noun, drop, decrease)
3
expansion(noun, decrease, growth)
3
increment(noun, drop)
2
enlargement(noun, decrease)
2
extension(noun, decrease, contraction)
2
growth(noun, stop, decline)
2
increasing(verb, adjective)
2
prosperity(noun, failure, poverty)
2
rise(noun, failure, hindrance)
1
accretion
1
accrual
1
accumulation
1
addendum
1
adjunct(noun, help, addition, enemy)
1
advance
1
advancement
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APASmart Define. (2015). lessening thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lessening/thesaurus/antonyms
ChicagoSmart Define. 2015. "lessening thesaurus" https://smartdefine.org/lessening/thesaurus/antonyms (accessed September 20, 2026).
HarvardSmart Define 2015, lessening thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lessening/thesaurus/antonyms>.
MLASmart Define. "lessening thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/lessening/thesaurus/antonyms>