Mishaps can be trivial or serious. Understanding the context hints at the severity. He laughed off the inconsequential mishap when he spilled his drink.
Pro Tip 2/3
Unexpected Occurrences
A mishap is unplanned. It contrasts with events that are supposed to occur. Her sudden fall during the hike was a mishap no one was prepared for.
Pro Tip 3/3
Consequence Inclusion
The term often implies some negative consequences, whether big or small. The mishap at the lab resulted in a costly loss of research material.