Lack of refinement is a term used to describe behavior or language that is considered to be socially unacceptable. INELEGANCE (10 letters) and grossness (9 letters) are two words that can be used to describe this concept. INELEGANCE is defined as being clumsy, awkward, or lacking grace or sophistication. Grossness, on the other hand, is defined as being unpleasantly or offensively coarse or crude. Both words can be used to describe a lack of refinement in behavior or language.