muttering
🇺🇸
/ˈmʌtərɪŋ/
🇬🇧
/ˈmʌtərɪŋ/
whispered or quiet complaints about something
There have been mutterings about the new policy.
关于新政策的窃窃私语。
speaking quietly to yourself
I heard her muttering to herself as she worked on the puzzle.
我听到她边解谜边自言自语。