Meaning of 'dud'

adjective

failing to detonate

Example: "It was a dud rocket."

noun

an event that fails badly or is totally ineffectual

Example: "People looked forward to the new product, but the demo was a dud."

Synonyms: turkey

noun

an explosion that fails to occur

Example: "The mortar was a dud."

Synonyms: misfire

noun

someone who is unsuccessful

Example: "The new goalkeeper turned out to be a dud."

Synonyms: flop