1) Aslant 2) Aslope 3) Diagonal 4) Having a grade 5) Inclined 6) Like many a theater floor 7) Like ski trails 8) Not on the level 9) Slanted 10) Slanting 11) Sloped Found on https://www.crosswordclues.com/clue/sloping
• (p. pr. & vb. n.) of Slope • (a.) Inclining or inclined from the plane of the horizon, or from a horizontal or other right line; oblique; declivous; slanting. Found on http://thinkexist.com/dictionary/meaning/sloping/
Slop'ing adjective Inclining or inclined from the plane of the horizon, or from a horizontal or other right line; oblique; declivous; slanting. -- Slop'ing*ly , adverb « The sloping land recedes into the clouds.» Cowper. Found on http://www.encyclo.co.uk/webster/S/123
adjective having a slanting form or direction; `an area of gently sloping hills`; `a room with a sloping ceiling` Found on https://www.encyclo.co.uk/local/20974