Dwell on is a phrase that means to think deeply or to focus on something for an extended period of time. The crossword solutions for this term are HARP (4 letters), OBSESS (6 letters), BELABOR (7 letters), MUSE (4 letters), and ITERATE (7 letters). HARP means to play a stringed instrument, OBSESS means to think about something constantly, BELABOR means to discuss something at length, MUSE means to ponder or reflect, and ITERATE means to repeat something. All of these words can be used to describe the act of dwelling on something.