The term 'REALLY MEAN' can be described by the crossword solutions EVIL (4 letters), OGRISH (6 letters), and SADISTIC (8 letters). EVIL is an adjective used to describe something that is morally wrong or bad, while OGRISH is a term used to describe something that is extremely unpleasant or shocking. SADISTIC is an adjective used to describe someone who takes pleasure in causing pain or suffering to others. Together, these three words describe someone or something that is extremely cruel and malicious.