vi·per·ous /-p(ə)rəs/ (a.)毒蛇般的,有毒的,陰險的
Vi·per·ous a. Having the qualities of a viper; malignant; venomous; as, a viperous tongue. “This viperous slander.” --Shak. -- Vi*per*ous*ly, adv. ◄ ►