Brush-off (noun)

1. The act of dismissing or rejecting something or someone.
2. An act or instance of treating someone or something in a dismissive or indifferent manner.

Origin:

The term brush-off is not found in any etymology sources. it's a phrase derived from the verb brush off which means to reject or dismiss something or someone. .

Examples:

1. He gave her a brush-off when she asked him for a date.
2. The company gave the new proposal a brush-off and decided to stick with their existing plans.
3. He got the brush-off from the boss when he asked for a raise.
4. She gave him the brush-off when he asked her out.
5. He got the brush-off at the meeting, when his ideas were not considered.