The term GROUCHY ONES can be summarized by two crossword solutions: OGRES (5 letters) and CRABS (5 letters). OGRES are mythical creatures that are often depicted as large, brutish, and ugly. They are usually portrayed as having a bad temper and being mean-spirited. CRABS are crustaceans that live in the ocean and have a hard outer shell. They are known for their crabby attitude and can be quite grouchy when disturbed.