The term 'neat as a pin' is often used to describe something that is very clean and orderly. This phrase can be broken down into five crossword solutions: SPOTLESS (8 letters), IMMACULATE (10 letters), KEMPT (5 letters), TIDY (4 letters), and inorder (7 letters). SPOTLESS means completely clean and free of dirt or stains, while IMMACULATE implies a level of perfection and flawlessness. KEMPT is an old-fashioned word meaning well-groomed and TIDY, while TIDY means neat and orderly. Finally, inorder means arranged in the proper order. All of these words together describe something that is neat, clean, and orderly, just like a pin.