nos·y / ˈnōzē/ (also nos·ey) inf. • adj. (nos·i·er, nos·i·est) (of a person or their behavior) showing too much curiosity about other people's affairs: he had to whisper to avoid being overheard by their nosy neighbors.• v. [intr.] pry into something: they don't nosy into your business like some people.DERIVATIVES: nos·i·ly / -zəlē/ adv.nos·i·ness n.