Cindy \ci(n)-dy\ as a girl's name is pronounced SIN-dee. It is of English origin. Originally a pet form of Cynthia (Greek) "from Mount Kynthos", and less often, of Lucinda (Latin) "light". Now commonly used as an independent name. It is sometimes used as a short form of the unrelated fairy-tale heroine's name Cinderella. Model Cindy Crawford; singer Cyndi Lauper.