Glitch is a noun that refers to a sudden, unexpected, and usually temporary malfunction or problem in a system or process. It can also be used as a verb meaning "to malfunction" or "to have a glitch".
Here are some examples:
* Noun: "There was a glitch in the system and my order didn't go through."
* Verb: "The computer glitched and froze."
Let me know if you had a different word in mind, and I'll be happy to help!