Top definition
A colloquial term and progression from the more common 'nightmare'.
Eg

I lost £500 quid in Vegas last night and had an absolute Smaretin!
by Dave Matthews (Selleck, Squeak) September 16, 2004
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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