Christmasite

A 'Christmasite' refers to a person who is obsessed with Christmas; they live and breathe Christmas. They celebrate all year round and are always talking about Christmas to anyone who will listen.

Slang word for a Crazy Christmas Person

Also, the title of a Poem by Claire Roach titled 'Christmasites'

That girl is an absolute Christmasite

by Christmas Countdown UK September 19, 2025