Definition of "kinky"

It seemed that there had never been a time when he had not known this moment of waiting while the packed church paused—the sisters in white, heads raised, the brothers in blue, heads back; the white caps of the women seeming to glow in the charged air like crowns, the kinky, gleaming heads of the men seeming to be lifted up— […]

1953, James Baldwin, “The Seventh Day”, in Go Tell It on the Mountain (Penguin Classics), London: Penguin Books, published 2001

What had I been expecting, behind that closed door, the first time? At the very least some minor sexual manipulation, some bygone peccadillo now denied him, prohibited by law and punishable by amputation. To be asked to play Scrabble, instead, as if we were an old married couple, or two children, seemed kinky in the extreme, a violation in its own way.

1985, Margaret Atwood, “Soul Scrolls”, in The Handmaid’s Tale, Toronto, Ont.: McClelland and Stewart, page 163

Their male customers are often identified as lonely, sleazy, and into kinky sex […]

1994, Roberta Perkins, Sex Work and Sex Workers in Australia, page ii

Scars on my back were revealed from when I was whipped by a sadomasochistic ex-lover. I wondered if it bothered anyone, but it only seemed to make everyone harder than they already were. I was a kinky girl.

2002, Lyla Verone, The Interview