The term 'tail end' refers to the back or LAST part of something. In this crossword, the solutions 'STINGER' (7 letters), 'RUMP' (4 letters), 'REAR' (4 letters), and 'LAST' (4 letters) all refer to the tail end of something. The word 'STINGER' is often used to describe the tail of an insect or a sharp remark. The word 'RUMP' is often used to describe the backside of an animal or person. The word 'REAR' is a synonym for the back of something. Lastly, the word 'LAST' is used to describe the final part of something.