sexy

Etymology 1

From sex + -y.

adj

1. (especially of a woman) Having sex appeal; attractive.
   The participants in the swimsuit competition are all very sexy.
   She has a sexy voice!
   If you want my body and you think I'm sexy / Come on sugar let me know 1978, “Da Ya Think I’m Sexy?”, in Blondes Have More Fun, performed by Rod Stewart
2. (of a thing or concept) Intriguing, appealing, likely to excite interest.
   The manufacturers have launched a sexy new car.
   We have some sexy ideas on how to improve sales.
   Being an undertaker is not a sexy career.
   Creamy cheese, tangy-sweet peppers, and a hit of heat tango in this sexy deviled-egg combo. 2013, Kathy Casey, D'Lish Deviled Eggs, page 67
   "The management of the quay walls and bridges has lagged behind in recent decades because it was not given the political priority it deserves and it is not a sexy topic," says Dijksma. 2020, Katja Brokke, “Amsterdam has been collapsing for years. Now it's paying the price”, in CNN Travel
3. (rare) Sexual; relating to or involving sex.
   He didn't really like me; all he wanted was for me to be sexy with him.

Etymology 2

From Latin sex (“six”) + -y, intended as a pun.

adj

1. (mathematics) Used to describe prime numbers that differ from each other by six.
   (73,79) is a sexy prime pair.