He had an unpleasant screechy voice.

His plans were regarded with some disfavor.

There's a foul smell in the kitchen.

Human nature revolts against such a crime.

We had an unpleasant experience there.

It will make most Americans uncomfortable if you insist on their accepting expensive gifts.

How did she get mixed up with such unpleasant people?

And since she refused to accept it, she had been living in extreme discomfort, exclaiming: "Why should we spend all the capital we are ever likely to have tying ourselves down to a place we detest!"

The spoiled meat had a nasty smell.

A frown may express anger or displeasure.