PISSY Meaning of PISSY in English /pis"ee/ , adj., pissier, pissiest . Slang ( vulgar ). 1. soiled with or reeking of urine. 2. inferior, nasty, or disagreeable. [ 1981-86; PISS + -Y 1 ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012