declivitous

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

sloping down rather steeply
• Syn:
downhill, downward-sloping
• Similar to:
descending
• Derivationally related forms:
downhill (for: downhill), declivity

• Từ đồng nghĩa / Synonyms:
  downhill, downward-sloping