The term 'epitome of thinness' can be described by the crossword solutions of RAZOR (5 letters), TISSUE (6 letters), RAIL (4 letters), WAFER (5 letters), REED (4 letters) and SKELETON (8 letters). RAZOR is a sharp blade used for shaving or cutting, TISSUE is a thin paper-like material, RAIL is a thin bar used for support, WAFER is a thin crisp biscuit, REED is a tall thin grass-like plant and SKELETON is the framework of bones in the body. All of these words together describe the term 'epitome of thinness' as they all represent something that is very thin.