An unhappy marriage refers to a marital relationship that is characterized by conflict, dissatisfaction and general unhappiness between the couple. This could be due to various reasons such as lack of communication, financial difficulties or infidelity. An unhappy marriage can take a toll on both partners emotionally, physically and mentally leading to feelings of frustration, resentment and sometimes even depression. It is important for couples in an unhappy marriage to seek professional help such as counseling or therapy to work through their issues and try to rebuild trust and intimacy in the relationship.