acclivousyoudaoicibaDictYouDict[acclivous 词源字典]
"Rising with a slope; sloping (especially steeply) upward, ascending", Mid 18th cent.; earliest use found in Nathan Bailey (d. 1742), lexicographer and schoolmaster. From classical Latin acclīvus acclive + -ous. Compare earlier acclive, acclivity.[acclivous etymology, acclivous origin, 英语词源]