I feel annoyed

One of the ways to improve English is by describing your own life. As a start, let's talk about bad things which may cause annoyance >.<

1. Mosquito
2. Crying baby
3. Unplanned assignment
4. A broken promise
5. People stealing your food
6.
7.
8.
9.
10.

Now, I am going to introduce a new word which is pesky. It means causing annoyance. We can say "I hate a pesky circumstance such as baby crying at night"