The term 'needing refinement' can be described by the crossword solutions of COARSE, CRASS, RAW, and CRUDE. COARSE means rough or harsh in texture, while CRASS is used to describe someone or something that is considered tasteless or insensitive. RAW is used to describe something that is unprocessed or unfinished, and CRUDE is used to describe something that is primitive or undeveloped. All of these words can be used to describe something that needs to be refined or improved.