impugn
Cross references: 1. deny im.pugn \im-'pyu:n\ vt [ME impugnen, fr. MF impugner, fr. L inpugnare, fr. in-] + pugnare to fight - more at PUGNACIOUS obs 1a: ASSAIL 1b: RESIST 2: to assail by words or arguments : oppose or attack as false - im.pugn.er n