When you slink, you move in a deliberately quiet and sneaky way. You might slink into your physics class, hoping the teacher won't notice how late you are.
Kids playing hide and seek will sometimes slink around the house, quietly searching for good hiding spots.
He slunk from college by...secret paths.
If you mutter, you speak very quietly so that you cannot easily be heard, often because you are complaining about something.
When someone mutters, she speaks in a low voice, either to herself or to another person.
1. All we heard was a mutter when the student received her disappointing report card.
2. She began to mutter again and he leaned forward to listen.
If you feel that something isn't worthy of your consideration, you may disdain it (or treat it with disdain).
If you disdain something, you might reject it with a haughty scoff, "Ha!".
1. She did not hesitate to express the disdain that she felt.
2. My suggestion was received with disdain.
