I just learned this new word: kitty-corner(ed), cater-corner(ed), catty-corner(ed) (to/across sth) = diagonally (across from) = en diagonale (de qqch). And I would like to know how it's used. Is it very common, is it colloquial, is there a spelling preferred over another? My oxford dictionary only knows "cater-*" and "catty-*", but not "kitty-*", whereas on Googlefight it seems to be the one that is the most used. So I'm a bit confused.