declivitous.................

This word for the day is brought to you by Mr. Webster
and the third edition of his New College Dictionary:

declivitous        adj.      fairly steep

as in:

With 99 weeks of unemployment checks in front of
him, his desire to seek new work took a declivitous
turn.

or

 As he came out of the mountains, the sign on the
declivitous roadway suggested he test his brakes.