Use the word "MUMBLE" when a person speaks softly or unclearly. It's not a good idea to mumble, but some people do it when they don't want another person to hear what they're saying.
- The teacher told the students to stop mumbling and finish their work.
- A lot of people in the office were mumbling about their supervisor, saying she was being unfair.
- What are you mumbling about?(People mumble when they complain privately about something.)
NUT
This is a nut. It goes onto a bolt or a screw.
This is a nut. It's a pistachio. Do you like to eat nuts?
This is a nut. He works in an office and his job has driven him crazy.
The word "nutty" is an adjective:
- This has a nutty flavor.
- She's kind of a nutty person.
- His job is making him nutty.
The word "nut" is found in some common expressions:
- The store sells everything, from soup to nuts.
- It feels like I got kicked in the nuts. (nuts = testicles. Be careful if you say this. It's kind of vulgar, and only men use it.)
- Aw nuts! (Darn! I'm disappointed.)