I, as an Englishman, would say KAY.
Some pronounce it like Key and some pronounce it like Ki. Hope this helped!
Keke (Kay-Kay)
mar-kay mar-kay
It is pronounced as "boo-kay."
KAY-oss
Kay pee
Kay-qe
Kay-9
Kay-free
pey -kay- ne -o - stressing on d kay
Kay Thanks Bye
Loo-Kay dia