The term 'Painful Ending' can be summarized by the crossword solution 'Algia, ' which is a five-letter word meaning 'PAIN.' Algia is derived from the Greek word 'algos, ' which means 'PAIN.' It is used to describe a wide range of painful sensations, including those caused by physical injury, illness, or emotional distress. In this context, it can be used to describe a situation in which someone experiences a difficult or unpleasant ending.