dud

dud    [duhd]

noun. someone, something that proves to be a failure

"Mike Tyson agreed - Mayweather-Pacquiao fight was a dud.  He wasn't terribly impressed, like millions who shelled out $100 for the 12-round unanimous decision Mayweather won."
"In tech, it is the design that separates a successful product from a dud."
"For a decade, 'Friends' was the successful NBC's prime-time TV show. The ratings agreed.  But a lot of the 'Friends' successors were duds."

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