4
formidable(adjective, great, big, large, long)
4
good
4
hard
4
headlong(adjective, sharp, course, extreme, abrupt)
4
hideous(adjective, expensive, high-priced, pricey, pricely)
4
horrid(adjective, expensive, high-priced, pricey, pricely)
4
horrific(adjective, expensive, high-priced, pricey, pricely)
4
invest(verb, fill, animate, inspire, let)
4
lave
4
luxurious(adjective, expensive, exclusive, classy, high-priced)
4
out of sight(expression, idiom, fancy, crazy, high)
4
overmuch(adjective, unreasonable, extreme, extravagant, extra)
4
penetrate
4
percolate(verb, fix, reduce, ruin, prepare)
4
plumb(adjective, straight, upright, erect, vertical)
4
prominent
4
rigorous(adjective, severe, stringent, drastic)
4
soak up(verb, expression, phrasal verb)
4
uplifted(adjective, great, big, large, long)
4
water(verb, lower, clean, water, absorb)
10 years ago|19k views|share |citing 
APASmart Define. (2015). steep thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/steep/thesaurus/synonyms
ChicagoSmart Define. 2015. "steep thesaurus" https://smartdefine.org/steep/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, steep thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/steep/thesaurus/synonyms>.
MLASmart Define. "steep thesaurus" 24 December 2015. Web. 21 September 2026. <https://smartdefine.org/steep/thesaurus/synonyms>