英汉词典

1. 愤怒的;愤慨的
    If you are indignant, you are shocked and angry, because you think that something is unjust or unfair.

indignant的反义词

    e.g. He is indignant at suggestions that they were secret agents...
           有人暗示他们可能是特务,这让他非常气愤。
    e.g. MPs were indignant that the government had not consulted them...
           政府没有事先征求他们的意见,下院议员们感到很愤怒。