3
improve(verb, stop, drop, fix, decline)
3
lengthen(verb, raise, extend, contract, shorten)
3
magnify(contract, shrink)
3
multiply(verb, increase, destroy, decrease, reproduce)
3
prolong(verb, raise, extend)
2
aggrandize(verb, keep, belittle)
2
amplify(verb, increase, raise, decrease, extend)
2
oxidize
2
add(verb, increase, adjoin)
2
amend
2
boost(stop, contract)
2
develop(verb, ruin, destroy, raise, fail)
2
elevate
2
elongate
2
enrich(verb, improve, embellish)
2
grow(verb, stop, drop, raise, extend)
2
inflate
2
invigorate(verb, raise, extend)
2
oxidise
2
protract
10 years ago|5.6k views|share |citing 
APASmart Define. (2016). reduce thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/reduce/thesaurus/antonyms
ChicagoSmart Define. 2016. "reduce thesaurus" https://smartdefine.org/reduce/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2016, reduce thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/reduce/thesaurus/antonyms>.
MLASmart Define. "reduce thesaurus" 26 February 2016. Web. 22 September 2026. <https://smartdefine.org/reduce/thesaurus/antonyms>