Silence occurring in second language classrooms is a complex phenomenon which springs from various sources and has multiple forms and functions (King, 2013). It can help both to shape learner and teacher emotions and to act as an individual’s response to particular in-class emotions. Adopting the perspective that emotions are contextually and socially constructed (Denzin, 1984), this talk considers how silence enters into an ecological relationship with such negative student and teacher emotions as embarrassment, anxiety, anger and boredom. In light of this, some productive emotion regulation strategies for educators will also be discussed.