[zhǎn dīng jié tiě]
resolute and decisive; categorical; categorical with grim determination; make it definitely clear; make sure there is no mistake about sth.; show firm determination; speak in unequivocal [categorical] terms; with decision and dispatch; without mincing words
give a categorical answer
斩钉截铁地回答
He spoke with curt finality.
他说得斩钉截铁。