Maddening
Part of speech: verb
Definition: To make angry.
Part of speech: adjective
Definition: Causing frustration or anger. Leading to insanity.
Infuriating
Part of speech: adjective
Definition: Extremely annoying; frustrating
Part of speech: verb
Definition: To make furious or mad with anger; to fill with fury.
Example sentence: As an actor, you have to give up all control to the director. He's the boss and has all the power. I'm a control freak, so that's really hard for me. Then when you see a film later, it can be infuriating, really disappointing. I've been very lucky, though, and so many of my early experiences were great.