形容詞 precipitous:

1. done with very great haste and without due deliberation
   同義詞：hasty, overhasty, precipitate, precipitant
2. characterized by precipices
3. extremely steep
   同義詞：abrupt, sharp

1. From a precipitous height we look at the town spread out below.
   我們從險峻的高處眺望鋪展在下面的城鎮(zhèn)。
2. A precipitous path led down the mountainside.
   沿著山腰下來有一條陡峭的山路。
3. We have a precipitous climb to the peak.
   我們向著陡峭山頂攀登。

pre.cip.i.tous

adj.（形容詞）
Resembling a precipice; extremely steep.See Synonyms at steep
險峻的：類似懸崖的；極其陡峭的參見 steep
Having several precipices:
多懸崖的：
例句：
a precipitous bluff.
多懸崖的絕壁

Usage Problem Extremely rapid, hasty, or abrupt; precipitate:See Usage Note at precipitate
【用法疑難】 急促的，急速的：極其迅速、急促或突然的；急轉(zhuǎn)直下的參見 precipitate

來源：
Probably from precipitious
可能源自 precipitious
from Latin praecipitium [precipice] * see precipice
源自 拉丁語 praecipitium [懸崖] *參見 precipice

【引伸】
precip.itously
adv.（副詞）
precip.itousness
n.（名詞）