The term DISAGREEABLE SORT can be broken down into two crossword solutions: CRAB and PILL. The word CRAB is a four-letter noun that refers to a crustacean with a hard shell, five pairs of legs, and two large claws. It is typically found in the ocean or in freshwater habitats. The word PILL is also a four-letter noun that refers to a small, round, solid piece of medication that is taken orally. It is usually used to treat illnesses or conditions. Together, these two words describe someone who is difficult to deal with and often causes arguments or disagreements.