Gleefully contemptuous is a term that describes someone who takes pleasure in being disrespectful or disdainful towards others. Some synonyms for this phrase include derisive, scornful, mocking, sneering, and jeering. These words all carry a negative connotation and suggest a sense of superiority or haughtiness on the part of the speaker. Other related terms might include patronizing, condescending, or dismissive. Whether it's a malicious insult or a subtle put-down, these words all convey an attitude of contempt towards others, making them powerful tools for anyone looking to undermine or belittle their opponents.