• (a.) Sloping upward; rising as a hillside; -- opposed to declivous.
Ac·cli'vous (#; 277) adjective [ Latin acclivis and acclivus .] Sloping upward; rising as a hillside; -- opposed to declivous . 
acclivous 1. Sloping upward; an ascent. 2. Rising as a hillside. 3. An upward slope, as of ground.