Jai is a noun used as a personal or proper name in various cultures, notably South Asian, often short for Jagadish or Jaiendra, and used in martial-arts and spiritual contexts as a greeting or acknowledgment (e.g., Jai Ho). It can denote victory, triumph, or a personal identity. In cross-cultural use, it also appears in phrases or as a title, sometimes transliterated with varying diacritics.
Full pronunciation guide