"Nosy" (also spelled "nosey") is an adjective that describes someone who is too interested in other people's private affairs or business. Definition: Nosy: showing too much curiosity about other people’s lives or things that don’t concern you. Example sentences: She's always asking personal questions — she's so nosy! Don’t be nosy; it’s none of your business. Synonyms: Inquisitive (negative sense) Meddlesome Intrusive Prying