Hark back to is a phrase that means to RECALL or REMEMBER something from the past. The crossword solutions for this phrase are RECALL (6 letters), REMINISCE (9 letters), REMEMBER (8 letters), and RECOLLECT (9 letters). All of these words mean to REMEMBER or RECALL something from the past, but they have slightly different connotations. RECALL is the most direct and straightforward of the four words, while REMINISCE implies a fondness for the past and a sense of nostalgia. REMEMBER is a more general term that can be used for both positive and negative memories, while RECOLLECT implies a more deliberate effort to REMEMBER something.