'Declivitous' definitions:

Definition of 'declivitous'

From: WordNet
adjective
Sloping down rather steeply [syn: declivitous, downhill, downward-sloping]

Definition of 'Declivitous'

From: GCIDE
  • Declivitous \De*cliv"i*tous\, Declivous \De*cli"vous\, a. Descending gradually; moderately steep; sloping; downhill. [1913 Webster]

Synonyms of 'declivitous'

From: Moby Thesaurus