What do you call a person who is against incest? I have tried asking Google numerous times, each time coming out empty handed. There seems to be lots of difficulty looking up that specific word. I'm doing a school research assignment on attraction and I wanted a more sufficient word to use instead of a sentence. (ex:" people who are against incest").Basically ,I wanted one word to shorten that. And if you are wondering, some people are actually okay with incest, so instead of putting an "all" on that tidbit I've decided to put a "some".