Synonyms for Steep (same or very similar meaning)
WordNet sense 1 (greatly exceeding bounds of reason or moderation):
exorbitant, extortionate, outrageous, unconscionable, usurious
WordNet sense 2 ((literal meaning) being at or having a relatively great or specific elevation or upward extension (sometimes used in combinations like `knee-high')):
high
WordNet sense 3 (extremely steep):
perpendicular
WordNet sense 4 (sharply inclined):
heavy
WordNet sense 5 (very steep; having a prominent and almost vertical front):
bold, sheer
WordNet sense 6 (extremely steep):
abrupt, precipitous, sharp
WordNet sense 7 (engross (oneself) fully):
absorb, engross, engulf, immerse, plunge, soak up
WordNet sense 8 (let sit in a liquid to extract a flavor or to cleanse):
infuse
From the ODE community, based on WordNet
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