indignant
词根词缀：
condign adj. （惩罚）值得的，应得的
con 加强 + dign 值得，有价值的；高贵的 → （惩罚）值得的，应得的
dignify v. 使…高贵
dign 值得，有价值的；高贵的 + ify 使… → 使…高贵
dignitary n. 显贵，要人
dign 值得，有价值的；高贵的 + itary 人 → 显贵，要人
dignity n. 尊严；庄严
dign 值得，有价值的；高贵的 + ity 具备某种性质，状况 → 尊严；庄严
indignant adj. 愤慨的，愤怒的
in 不 + dign 值得，有价值的；高贵的 + ant …的 → 愤慨的，愤怒的
indignation n. 愤怒
in 不 + dign 值得，有价值的；高贵的 + ation 行为，过程，状态，结果 → 愤怒
indignity n. 轻视；侮辱
in 不 + dign 值得，有价值的；高贵的 + ity 具备某种性质，状况 → 轻视；侮辱
数据来源：新东方英语词汇速记大全
相关例句：
I was indignant at their mean actions.
我对他们的卑劣行径感到愤慨。
When I became aware of this right-about-turn, I was indignant and questioned searchingly the officers concerned.
当我知道这种向后转的变更时，我非常愤怒，便向有关军官追根究底地询问原因。
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。
He was very indignant with his wife over her improper conduct.
他对他妻子的不端行为感到非常愤慨。
People are indignant at the unfair treatment he received.
人们为他受到的不公正待遇愤愤不平。
I become somewhat indignant.
我感到有点愤愤不平。