...he is displeased, or unhappy, but always enraged. It must be exhausting to go through life with your outrage meter stuck on ten. Today's Talking Points Memo article is an example, but they do go on to say that he was merely having a "conniption", which I find a charming use of the language.

https://talkingpointsmemo.com/news/trump-enraged-by-michigans-mail-in-voting-initiative-threatens-to-hold-up-funding-to-state