—adj. 1. physically painful or sensitive, as a wound, hurt, or diseased part: a sore arm. 2. suffering bodily pain from wounds, bruises, etc., as a person: He is sore because of all that exercise. 3. suffering mental pain; grieved, distressed, or sorrowful: to be sore at heart. 4. causing great mental pain, distress, or sorrow: a sore bereavement. 5. causing very great suffering, misery, hardship, etc.: sore need. 6. Informal.annoyed; irritated; offended; angered: He was sore because he had to wait. 7. causing annoyance or irritation: a sore subject.
—n. 1. a sore spot or place on the body.
2. a source or cause of grief, distress, irritation, etc.