丝恩发怨

[成语]
sī ēn fà yuàn

[含义]
丝、发：形容细小。形容极细小的恩怨。

[来源]
《资治通鉴·唐纪·文宗太和九年》：“是时李训、郑注连逐三相，威震天下。于是平生丝恩发怨无不报者。”

[用法]
联合式；作宾语；含贬义


[英文]
gratitude for the slightest favour received or grudge against the slightest wrong done