斩草除根

1.cut the weeds and dig up the roots; cut down the grass and pull up the roots; cut off the grass and take out its roots; destroy evil, leaving no chance for its revival; dig up the grass, root and all; destroy root and branch; eliminate the cause of; exterminate [destroy] sth. root and all; One mustn't cut a tuft of grass only, but must uproot it.; pluck up the evil by the roots; pull up weeds by the roots; rid oneself of the weeds by killing the root; root out; lay the axe to the root of ...; Slay them, root and branch!; stamp out [eradicate] the source of trouble; uproot evil; wipe sb. off the face of the earth; When cutting weeds, remove the roots as well.