Guess how I'm feeling now?

Definition

exasperate verb [T]
to make someone very annoyed, usually when they can do nothing to solve a problem

exasperated adjective
annoyed: He's becoming increasingly exasperated with the situation.

exasperatedly adverb

exasperating adjective
extremely annoying: It's so exasperating when he won't listen to a word that I say.

exasperatingly adverb

exasperation noun [U]
annoyance: There is growing exasperation within the government at the failure of these policies to reduce unemployment.After ten hours of fruitless negotiations, he stormed out of the meeting in exasperation.

(from Cambridge Advanced Learner's Dictionary)