I am polyamorous, meaning that I love and date multiple people with the knowledge and consent of everyone involved, and I've always been bothered with the hate and bigotry often directed at polyamorous people. However, a problem I found with this is that there was no accepted term for bigotry against polyamory. Gays have homophobia. Races have racism. Sexes have sexism. What did polyamory have? Nothing. What could I do?
Well, I could do what should've been done long ago. Invent a term. I took a page out of the transgender and bisexual activism book, and adapted it from homophobia, and I decided on Polyphobia. Of course, there are already accepted meanings of polyphobia (the fear of many things), but it's not widely used and the meaning should be clear from context and benefits from connection to homophobia, biphobia, and transphobia.