kitty-cornered vs kitty-corner

kitty-cornered and kitty-corner both are adjectives.

Word	Noun	Adjective	Verb	Adverb
kitty-cornered	No	Yes	No	No
kitty-corner	No	Yes	No	No

As adjectives, kitty-cornered and kitty-corner are synonyms defined as:

kitty-cornered and kitty-corner: slanted across a polygon on a diagonal line

Other synonyms of kitty-cornered include cata-cornered, catacorner, cater-cornered, catercorner, catty-corner, catty-cornered.

kitty-cornered (adjective)	kitty-corner (adjective)
slanted across a polygon on a diagonal line	slanted across a polygon on a diagonal line