Top Definition
An extremely long or never ending series of unfortunate or terrible events or experiences.
Dating her wasn´t just a nightmare - it turned out to be a nightmarathon.
by Evil Dirt August 06, 2008
1 more definition
5 Words related to Nightmarathon
A series of bad dreams in a single night.
"I slept terribly, as I suffered from a night-marathon."
by rickbbiking April 21, 2013

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