muttering is mutter's Present Participle

mutter

US [ˈmʌtər]
UK [ˈmʌtə(r)]
  • v.咕哝;轻声低语;喃喃而语;咕哝地抱怨
  • n.咕哝;抱怨
  • Web喃喃自语;嘀咕;呢喃
Past Participle:muttered  Present Participle:muttering  Simple Present:mutters  
muttering
n.
1.
(私下的)抱怨,牢骚complaints that you express privately rather than openly
There have been mutterings about his leadership.
底下对他的领导一直怨声不断。
2.
喃喃自语words that you speak very quietly to yourself