aslope

from WordNet (r) 3.0 (2006)

aslope
    adj 1: having an oblique or slanted direction [syn: {aslant},
           {aslope}, {diagonal}, {slanted}, {slanting}, {sloped},
           {sloping}]

from The Collaborative International Dictionary of English v.0.48

Aslope \A*slope"\, adv. & a. [Pref. a- + slope.]
   Slopingly; aslant; declining from an upright direction;
   sloping. "Set them not upright, but aslope." --Bacon.
   [1913 Webster]