Slang A common term used by time travelers when a fellow time traveler commonly slips into the mannerisms and/or the dialect of another time.
Ex: Fredrick looked over at his companion Fernando who was hunched over and drooling "Urgh!?" he asked. Fernando staggered around in a small dance then replied back "Glub! GRR' UGH!". Fredrick turned back to the girls, "don't worry, he's a regular relapser".
© Wandering Pilgrims Dictionary of strange definitions, 2000