From Persian خوشی (khoshī), meaning happiness or pleasure, derived from خوش (khosh), meaning "happy, pleasant." Persian was the prestige language of the Mughal court, and thousands of its words — including खुशी — passed seamlessly into everyday Hindustani speech.

खुशी is central to celebratory expressions in Hindi culture. Phrases like "खुशी खुशी" (khushi khushi, "happily/with joy") are common in weddings, festivals like Diwali and Eid, and everyday conversation. The word also appears in countless Bollywood song titles and lyrics, making it one of the most emotionally resonant words in the language. Do not confuse it with "ख़ुश" (khush), the adjective meaning "happy" — खुशी is the noun form of that feeling.