The asexual flag.
Asexuality is characterized by a lack of sexual attraction to people regardless of their sex or gender. Not all asexuals dislike sex, however; some experience attraction (either romantically or aesthetically) without feeling sexual attraction. Most asexuals aren't repulsed by the idea of sex, either. They just have no innate desire to participate in sexual acts like some other people would. There are a wide variety of terms that fall under the asexual umbrella besides just "asexual". Demisexual, grey-asexual, antisexual, and aromantic are all terms used in close conjuncture with asexual.