Betray irritability is a term used to describe a person's behavior when they are feeling betrayed or angry. It can be seen as a sign of emotional distress, and is often accompanied by feelings of frustration, sadness, and even rage. SNAP is a four-letter word that is often used to describe a sudden, sharp reaction to something. In this context, it could be used to describe the sudden outburst of emotion that someone might have when feeling betrayed or angry.