to be offended; to get angry; to be annoyed; to be miffed; to be huffy; to be sullen; to be upset
to be stuffy; to be stifling; to be muggy
firmly (shutting one's mouth)
彼の言葉にむっとした。
I felt offended by his words.
むっとして席を立った。
I stood up in a huff.
冗談を言ったらむっとされた。
They got upset when I made a joke.