The term 'boorish sort' can be broken down into seven crossword solutions: CAD (3 letters), LOUT (4 letters), APE (3 letters), YAHOO (5 letters), CLOD (4 letters), CHURL (5 letters), and OAF (3 letters). Each of these words is a synonym for boorish, meaning someone who is rude, insensitive, or ill-mannered. CAD is short for cadet, which is a military trainee, while LOUT is an unrefined person. APE is a slang term for an imitator, YAHOO is a term for a coarse, brutish person, CLOD is a clumsy, awkward person, CHURL is a rude, surly person, and OAF is an awkward, foolish person. All of these words are used to describe someone who is boorish in nature.