Snideness refers to the act of expressing contempt or criticism in a mocking or disdainful manner. It's often perceived as hurtful, rude or ill-mannered. Some synonyms that convey a similar meaning to snideness are sarcasm, derision, irony, satire, cynicism, sneering, taunting, jeering, and mockery. These words indicate the intention to ridicule or belittle someone, often without provocation. Additionally, some synonyms for snideness can refer to more subtle forms of condescension, such as patronizing, insinuation, or passive-aggressive behavior. It's important to communicate with integrity and respect in all situations to avoid hurting others or damaging relationships.