1844, "full of kinks, twisted, curly," from kink (n.) + -y (2). Meaning "odd, eccentric, crotchety" is from 1859; that of "sexually perverted" is from 1959. Related: Kinkiness.
kinky sex
kingpin
Kings
kingship
kink
kinkajou
kinky
kino-
kinship
kinsman
kiosk
Kiowa