Acerbic (adjective)

1. Having a sharp and sometimes bitter taste or character.
2. Having a sharp, biting, or sour tone or manner.

Origin:

Late 18th century: from latin acerbus "sour, bitter".

Examples:

1. The wine had an acerbic aftertaste.
2. His acerbic wit made people uncomfortable.
3. The acerbic comments from the critics stung.
4. The acerbic humor made the audience laugh.
5. The acerbic tone of her voice made it clear that she was not pleased.