Here are some ways to use it:
* "She was perturbed by the unexpected news."
* "The noisy neighbors perturbed his peace."
* "He was visibly perturbed by the accusation."
Other synonyms for perturbed include:
* Agitated
* Anxious
* Distressed
* Flustered
* Nervous
* Unsettled
* Worried
Let me know if you have any other questions!