The Collaborative International Dictionary
Declivitous
Declivitous \De*cliv"i*tous\, Declivous \De*cli"vous\, a. Descending gradually; moderately steep; sloping; downhill.
Wiktionary
declivitous
a. descend gradually; moderately steep; slope; downhill.
WordNet
declivitous
adj. sloping down rather steeply [syn: downhill, downward-sloping]
Usage examples of "declivitous".
The declivitous external walls were overgrown with silvery-purple vines, drooping ferns, and fleshy moss.
Thence, through declivitous grottoes and along perilously skirted gulfs, he was conducted ever downward by Raphtontis into the world beneath the mountain Voormithadreth.
He forgot his vexation and slithered down the declivitous wall to land beside her.