Today at a boring presentation that I had to listen to twice, I noticed a wide open unabridged Webster's...so I slid over to it and began to read about hornblende. Fun. And then I noticed a wonderful word with a wonderful definition:

horripilation--the standing up of the hair on the neck as with goosebumps.

And then I noticed that horror had the Latin horrere as the root.

Anyway, since it's the season, I thought you might enjoy reading a list of bristling words:

horror
horripilation
horripilate
horrisonous
horrisonant
horrendous (Why not!)
horrent