Ruthless Sort is a term used to describe a person who is cruel and unsympathetic. The crossword solutions for this term are Piranha (7 letters) and OGRE (4 letters). Piranha is a type of fish found in South American rivers that is known for its aggressive behavior and sharp teeth. An OGRE is a mythical creature often depicted as a large, brutish humanoid with a taste for human flesh. Both of these creatures are known for their ruthless and violent behavior, making them fitting solutions for the term Ruthless Sort.