1 definition by stupidpower

A term popularized by Liz Lemon from 30 rock which is used to describe the event which led to a breakup with someone or something (ie. Brand loyalty)
"What happen, did the relationship suck?"
-Esposito
"Dealbreaker. She wanted to have sex in a Coffin"
-Ryan
(From the TV show castle)

"I loved Microsoft, but Windows Vista was the dealbreaker for me.
by stupidpower December 1, 2009
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