Homophobia. A word used to describe people against the practice of homosexuality or the practice itself. Let's break down the word. Homo Phobia. Then another word Homo Sexual And another Homo Zygous (I'm a chemistry man so shut up if I slept this wrong.) Those words all have the root Homo in them. Let's look at the last two. Homozygous means that you have two of the same genes. For example, Blonde Hair and Blonde Hair. Homosexual means attraction to the same sex. Homo. It means same. Phobia. It means the fear of or aversion to. Homophobia. The fear of or aversion to same. See what a lack of understanding on Greek and Latin roots can do?