Here are some examples of how "fiasco" is used:
* "The concert was a complete fiasco - the sound system kept failing and the lead singer forgot all the words."
* "The company's new product launch was a fiasco, with sales falling far short of expectations."
* "The attempt to stage a coup d'état was a fiasco, ending with the rebels being arrested."
Other related words:
* Disaster
* Catastrophe
* Debacle
* Flop
* Mishap