Synonyms for Kitty-cornered (same or very similar meaning)
WordNet sense 1 (slanted across a polygon on a diagonal line):
catercorner, catty-corner, catty-cornered, kitty-corner, catacorner, cata-corneredWordNet sense 2 (slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled):
obliqueFrom the ODE community, based on WordNetadd/edit