The term 'harped (on)' can be summarized by three crossword solutions: belabored (9 letters), DWELT (5 letters), and rubbedin (8 letters). Belabored means to labor or work hard on something, DWELT means to dwell or linger on a subject, and rubbedin means to press or emphasize something. All three words suggest that the term 'harped (on)' is used to describe someone who talks or focuses on a particular subject for an extended period of time.