occurring between members of the same country, group, or organization
adjective
http://www.merriam-webster.com/dictionary/internecine
“You know you believe it when you start your own little family with some person you met four years ago in a bar and then he tries to open the presents on Christmas Eve because that’s what he did in his family and you have the strong urge to run screaming from the building holding your banner about the end and how it is nigh. It is a moving and comic thing — a Murdochian scuffle between the Real and the Dream — to watch a young couple as they teeter around the Idea of Christmas, trying to avoid internecine festive warfare.”
They didn’t want their traditions to clash now that they’re living together.
