Vexation can also refer to something that causes anxiety and worry more than annoyance. When the parents of the kid you're babysitting are two hours late to return and aren't answering their phones, that could be a vexation. You are less annoyed than worried. (Though, to be honest, you're still a little annoyed).

What is a personal vexation?

noun. the act of vexing. the state of being vexed; irritation; annoyance: vexation at missing the bus. something that vexes; a cause of annoyance; nuisance: Rush-hour traffic is a daily vexation.

What is a meaning of vexation?

1 : the quality or state of being vexed : irritation. 2 : a cause of trouble : affliction. 3 : the act of harassing or vexing : troubling.