To grin or laugh foolishly.To grin; especially and usually, to grin or smile in a contemptuous manner; express contempt by a grimace marked by slight turning up of the nose.To insinuate contempt by a covert expression; use words suggestive rather than expressive of contempt; speak derisively.Synonyms Scoff, Sneer, Jeer, Gibe. Scoff is the strongest word for the expression of utter contempt or abhorrence by opprobrious lauguage. To sneer is to express contempt by more or less covert sarcasm. To jeer is to try to raise a laugh by sarcastic language. To gibe is to use contemptuous, mocking, or taunting expressions.To treat or address with sneers; treat with contempt; sneer at.To utter with a contemptuous expression or grimace.To affect in a specified way by sneering.n. A derisive or contemptuous grin or smile; an expression of the face marked by a slight turning up of the nose, and indicating contempt; a look of scorn, disdain, or derision; hence, the feeling thus expressed.n. A verbal expression of contempt; an insinuation of scorn or derision by language more or less covert and indirect.n. Synonyms See sneer, v. i.