Discombobulate (verb)

To confuse or disconcert someone.

Origin:

From dis- "reverse" + combobulate "throw into confusio.n"

Examples:

1. The difficult question completely discombobulated the contestant.
2. The last-minute change of plans discombobulated the entire team.
3. The bad news discombobulated me and I didn't know what to say.
4. The unexpected turn of events discombobulated the witness on the stand.
5. The sudden change in schedule discombobulated the whole team and caused delays.