mutter /ˈmʌtə/ I. vt. & vi. 轻声低语，小声抱怨：mutter (away) to oneself 喃喃自语；mutter threats at sb. 低声恐吓某人；mutter against sb. 抱怨某人 ‖II. n. ［c］ 轻声细语，抱怨：He heard a mutter from the audience. 他听见听众中的喃喃低语。