A word given to denote a period of continuous sexiness across a certain series of events. An amalgam of the words "sexy" and "continuity". Sexinuity can be used to describe the continuous sexiness of a person throughout an entire television series, movie franchise, book series etc.
1. Emily: Oh that Jasper, how does he do it?
Kate: Yeah, he is not likely to lose his sexiness anytime soon.
Emily: Totally. Jasper's got a serious case of the sexinuity.
2. Kate: Do you think Jackson will cut his beautiful hair?
Emily: Nah, they need to keep it that length for sexinuity reasons.