outrageous vs steep

outrageous is not a noun while steep is a noun.

Word	Noun	Adjective	Verb	Adverb
outrageous	No	Yes	No	No
steep	Yes	Yes	Yes	No

As adjectives, outrageous and steep are synonyms defined as:

Other synonyms of outrageous include exorbitant, extortionate, unconscionable, usurious.

outrageous (noun)	steep (noun)
	a steep place (as on a hill)

outrageous (adjective)	steep (adjective)
greatly exceeding bounds of reason or moderation	having a sharp inclination
grossly offensive to decency or morality; causing horror	of a slope; set at a high angle
	greatly exceeding bounds of reason or moderation

outrageous (verb)	steep (verb)
	let sit in a liquid to extract a flavor or to cleanse
	devote (oneself) fully to