Uh-uh (interjection)

1. An expression of negation or disagreement, often used to indicate that one is not going to do something or does not agree with something.
2. A way of saying "no" or "I disagree" in a non-verbal way.

Origin:

20th century: imitative of the sound of negation or disagreement.

Examples:

1. I asked if she wanted to go to the party and she just shook her head and said "uh-uh".
2. He asked if I would lend him some money and I said "uh-uh".
3. The boss asked if I would take on the extra work and I just said "uh-uh".
4. She asked if I wanted to go on a trip with her and I said "uh-uh".
5. He asked if I wanted to try the new restaurant and I said "uh-uh" because I don"t like that type of food.