unrighted wrong; unredressed injustice; 不白之冤
redress an injustice; right a wrong 申冤
become enemies; contract enmity 结冤
waste money; not get one's money's worth; 花冤钱
What bad luck, nothing came of my trip. 白跑一趟,真冤!
Don't kid me!; 别冤人!
I'm not kidding. 我不冤你。
牛津高阶第八版
美国韦氏词典
Dictionary.com
Free Dictionary
维基百科 (自由的百科全书)