The term 'less refined' can be described by the crossword solutions of RAWER (5 letters), CRUDER (6 letters), CRASSER (7 letters), EARTHIER (8 letters), COARSER (7 letters), and RUDER (5 letters). These words all refer to something that is not as sophisticated or polished as something else, and can be used to describe a variety of things. For example, rawer food is not cooked or processed, CRUDER language is more vulgar, crasser behavior is more inappropriate, earthier materials are more natural, COARSER textures are rougher, and RUDER comments are more offensive.