Read the dictionary definition of irritation. All definitions for this word.
1. the act of troubling or annoying someone
2. unfriendly behavior that causes anger or resentment
3. an uncomfortable feeling of mental painfulness or distress
4. a sudden outburst of anger
1. his temper sparked like damp firewood
5. the neural or electrical arousal of an organ or muscle or gland
6. the psychological state of being irritated or annoyed
7. (pathology) abnormal sensitivity to stimulation
1. any food produced irritation of the stomach