It’s no accident that the word pleasant is inside pleasantry, since a pleasantry is a simple, polite, and pleasant remark made in a conversation. Pleasantries aren’t that deep — talking about politics or religion might be outside the pleasantry range, but some good-humored chatting never hurt anyone. You might say some pleasantries to a passerby on the street, when you are introduced to someone new, or if your grandmother asks you a question about your dating life.