exasperation

/EH0 K S AE0 S P ER0 EY1 SH AH0 N/
noun
  1. 1

    The act of exasperating or the state of being exasperated; irritation; keen or bitter anger.

  2. 2

    Increase of violence or malignity; aggravation; exacerbation.

Source: https://en.wiktionary.org/wiki/exasperation