Harrumph (verb)

1. To make an abrupt noise, typically a clearing of the throat, to indicate disapproval or annoyance.
2. To make a noise indicating disapproval, typically a clearing of the throat, usually as a way of showing one's displeasure or disagreement with something.

Origin:

Imitative of a clearing of the throat or a sniff.

Examples:

1. The old man harrumphed and shook his head at the suggestion.
2. He harrumphed loudly when he heard the news.
3. She harrumphed when her husband suggested they go out for dinner.
4. The teacher harrumphed when a student asked a question.
5. The audience harrumphed when the speaker made a controversial statement.