Ansexual is a lack of interest in all kinds of sexual pleasure, interaction, or attraction, whether it be engaging in it or hearing about other people engaging in it. This sexuality can also be used to describe hate towards sexual feelings of anybody. This does not mean the person hates another, or themselves, or discriminates against others. It just means one has an intense hate towards any sexual feelings they have towards another or themselves.
In other words, ansexuality is used to describe somebody who strongly dislikes, or hates, the aesthetic of sex and/or genitalia, and overall dreads the idea of sexual attraction.
Similar terms include sex repulsed, apothisexual, and anticarnal.