A little way up the hill, for instance, was a great heap of granite, bound together by masses of aluminium, a vast labyrinth of precipitous walls and crumpled heaps, amidst which were thick heaps of very beautiful pagoda-like plants—nettles possibly—but wonderfully tinted with brown about the leaves, and incapable of stinging.
There are no more uses of "precipitous" in the book.
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He followed Hollis’s pink truck down a newly paved side street that sloped up precipitously, causing the Hearse’s worn-out engine to rev for its very life.
John Green -- An Abundance of Katherines
I realize, probably too late, that I wish to leave something of myself, a small service to Bedley Run, and not simply a respectable headstone, but after seeing the generic, forlorn closedness of the store, I feel precipitously insubstantial behind the wheel, like an apparition who has visited too long.