The term 'lacking refinement' can be described by a variety of words, such as EARTHY (6 letters), RUDE (4 letters), COARSE (6 letters), roughcast (9 letters), INELEGANT (9 letters), CRASS (5 letters), GAUCHE (6 letters), RAW (3 letters), and lowrent (7 letters). These words all describe a lack of sophistication or refinement, often referring to behavior, language, or appearance. For example, EARTHY could refer to someone who is down-to-earth and unpretentious, while RUDE could refer to someone who is impolite or disrespectful. COARSE could refer to something that is rough or harsh, while roughcast could refer to something that is crudely made. INELEGANT could refer to something that is clumsy or awkward, while CRASS could refer to something that is tasteless or vulgar. GAUCHE could refer to someone who is socially awkward, while RAW could refer to something that is unprocessed or uncultivated. Finally, lowrent could refer to something that is of low quality or value.