The term 'FEEL PAIN' can be broken down into five crossword solutions: AIL, HURT, ACHE, SUFFERING, and SUFFER. AIL is a verb meaning to be afflicted with a physical or mental illness or distress. HURT is a verb meaning to cause physical pain or injury to someone or something. ACHE is a verb meaning to experience a dull, continuous pain. SUFFERING is a noun meaning the state of undergoing pain, distress, or hardship. Finally, SUFFER is a verb meaning to experience or be subjected to pain, distress, or hardship. All of these words are related to the concept of feeling pain, either physically or emotionally.