Derisive (adjective)

1. Expressing or showing ridicule or contempt; mocking.
2. Expressing or indicating a feeling of contempt or ridicule.

Origin:

Late 16th century: from latin deris- "mocked", from the verb deridere (see derision).

Examples:

1. He made a derisive comment about her appearance.
2. The audience gave the comedian a derisive applause.
3. The employee's derisive attitude towards his coworkers caused tension in the office.
4. She made a derisive gesture towards the idea.
5. The politician's derisive attitude towards the opposition led to a heated debate.