The term 'Sorry Sort' can be broken down into three crossword solutions: RUER (4 letters), ATONER (6 letters), and REPENTER (8 letters). RUER is a person who expresses regret or sorrow, ATONER is someone who makes amends for a wrong they have done, and REPENTER is someone who expresses remorse for their actions. All three words are related to the concept of apologizing or expressing regret for something that has been done.