大义灭亲

to place righteousness before family (idiom); ready to punish one's own family if justice demands it

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

righteousness / virtuous cause / a woman's marriage / main points of a piece of writing

surname Yi / (Tw) abbr. for 義大利|义大利[Yi4 da4 li4], Italy

justice / righteousness / meaning / foster (father etc) / adopted / artificial (tooth, limb etc) / relationship / friendship

to extinguish or put out / to go out (of a fire etc) / to exterminate or wipe out / to drown

parent / one's own (flesh and blood) / relative / related / marriage / bride / close / intimate / in person / first-hand / in favor of / pro- / to kiss / (Internet slang) dear

parents-in-law of one's offspring