6. Pentheraphobia

Image Credit

Here’s one that a lot of married people may be able to relate to. Believe it or not, this one is a fear of a mother-in-law. It seems as if there is an endless supply of mother-in-law jokes, and while a great many married people probably have problems with their in-laws, people who truly suffer from Pentheraphobia in a clinical sense are probably few and far between.