to feel indignant(at some injustice)
不平
unsatisfied/unconvinced/indignant
不忿
angry voices and hard words
恶声恶气
be indignant at sth.
对某事愤慨
Angry@fierce and rough
忿厉粗暴
Angry and spiteful words
忿言怨词
Resentful or indignant because of injustice
愤愤不平
resentful@indignant or aggrieved because of injustice
愤愤不平
be moved and indignant
感愤