kitty-corner
adverb
[ ˈkɪtɪˌkɔːnə ]
• diagonally opposite someone or something.
• "he lived kitty-corner and six doors up from me"
kitty-corner
adjective
• situated diagonally opposite someone or something.
• "the two kitty-corner lots have enough space for seven apartment blocks"
Origin:
variant of cater-cornered.