Cách sử dụng
The word 'mutter' is commonly used when someone is speaking in a low voice that is hard to hear. It is usually used to describe someone who is complaining or unhappy about something but not saying it out loud. For example, if someone is unhappy with their boss, they might mutter under their breath instead of confronting them directly. It can also be used in a positive sense, such as when someone is talking to themselves quietly.