Queer  —adj. 1 strange, odd, eccentric. 2 shady, suspect, of questionable character. 3 slightly ill; faint. 4 slang offens. (esp. Of a man) homosexual. —n. Slang offens. Homosexual. —v. Slang spoil, put out of order.  in queer street slang in difficulty, esp. In debt. Queer a person's pitch colloq. Spoil a person's chances. [origin uncertain]