dud
noun(dud)
an event that fails badly or is totally ineffectual
Examples:
The meeting was a dud as far as new business was concerned.
dud
noun(dud)
an explosion that fails to occur
dud
noun(dud)
someone who is unsuccessful
dud
adjective(dud)
failing to detonate; especially not charged with an active explosive
Examples:
He stepped on a dud mine.