The phrase 'agony mind' refers to a state of mental anguish and distress. There are several synonyms for this phrase including torment, agony, suffering, distress, and pain. Torment refers to severe physical or emotional pain, while agony describes intense suffering. Suffering is a more general term that describes any type of distress or pain. Distress refers to a feeling of extreme anxiety or unhappiness, while pain describes physical or emotional discomfort. Other possible synonyms for 'agony mind' include anxiety, misery, despair, and anguish. These words are often used interchangeably in literature and everyday conversation to describe the experience of mental or emotional hardship.