a fear of holidays of any sort. This includes christmas and/or hanukkah, kwanzaa, ramadan, etc. Basically any holiday involving family time with relatives outside the immediate family, cheesy music related to said holiday, excessive pointless traditions, or cleaning the house for guests you don't actually enjoy spending 'quality' time with. Symptoms include: going out of one's way to avoid unenjoyable activities, awkward or emotion filled conversations, and head aches, excessive sleep, and hypochondria.
"Whoa, your dad has baaaad holidayophobia."
"Do you really have the swine flu? Or is it just your holidayophobia acting up?"