8
towering(adjective, great, big, unreasonable, extreme)
6
tall(adjective, big, high, lofty, elevated)
4
excessive(adjective, fancy, unreasonable, extreme, high)
4
soaring(adjective, great, big, high, large)
3
stratospheric(adjective, big, usual, unreasonable, extreme)
3
exorbitant(adjective, fancy, unreasonable, extreme, high)
3
lofty(adjective, great, big, high, large)
3
steep(adjective, great, fancy, big, usual)
3
unconscionable(adjective, big, usual, unreasonable, extreme)
2
inordinate(adjective, fancy, unreasonable, extreme, high)
2
aerial(adjective, great, big, high, large)
2
airy(adjective, high, lofty, tall, elevated)
2
extreme(adjective, unreasonable, high, extravagant, extra)
2
great(adjective, big, high, large, lofty)
2
high(adjective, fancy, informal, big, expensive)
2
immoderate(adjective, fancy, unreasonable, extreme, high)
2
raised(adjective, high, lofty, tall, elevated)
2
stiff(adjective, fancy, big, usual, unreasonable)
2
unreasonable(adjective, fancy, extreme, high, extravagant)
1
alpine(adjective, great, big, high, large)
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APASmart Define. (2015). sky-high thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/sky-high/thesaurus/synonyms
ChicagoSmart Define. 2015. "sky-high thesaurus" https://smartdefine.org/sky-high/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, sky-high thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/sky-high/thesaurus/synonyms>.
MLASmart Define. "sky-high thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/sky-high/thesaurus/synonyms>