1
pump up
1
quiet(verb, decline, fall, fail, diminish)
1
raise
1
rarefaction
1
rarefied
1
rarify
1
rectify
1
sap
1
shrivel(verb, quiet, decline, fall, fail)
1
sink(verb, decline, fall, fail, diminish)
1
slack off(verb, expression, quiet, decline, fall)
1
spike(verb, thin)
1
spiritualize
1
spread(verb, expansion)
1
spread out(verb, expression, phrasal verb, expansion)
1
squeeze out
1
steam
1
stretch
1
sublime
1
subtilise
11 years ago|5.5k views|share |citing 
APASmart Define. (2015). rarefy thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/rarefy/thesaurus/synonyms
ChicagoSmart Define. 2015. "rarefy thesaurus" https://smartdefine.org/rarefy/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, rarefy thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/rarefy/thesaurus/synonyms>.
MLASmart Define. "rarefy thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/rarefy/thesaurus/synonyms>