1
hike up
1
huff
1
hush(verb, quiet, decline, fall, fail)
1
increase
1
infuse
1
languish(verb, quiet, decline, fall, fail)
1
lessen(verb, quiet, decline, reduce, fall)
1
make less dense(expression, idiom)
1
melt(verb, decline, fall, fail, diminish)
1
melt away(verb, expression, quiet, decline, fall)
1
moderate(verb, decline, fall, fail, diminish)
1
pad
1
perish(verb, decline, fall, fail, diminish)
1
peter out(verb, expression, decline, fall, fail)
1
poop out(verb, expression, quiet, decline, fall)
1
precipitate
1
press
1
press out
1
puff up
1
pump
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>