Afterthought is a term used to describe a thought or opinion that comes after an event has already taken place. The related terms RETROSPECT (10 letters), REVIEW (6 letters), and POSTSCRIPT (10 letters) all refer to the idea of looking back on something that has already happened. RETROSPECT is the act of looking back on past events, while REVIEW is the act of examining something in detail. POSTSCRIPT is an additional thought or comment added after the main body of a letter or document has been written. All three terms are related to the concept of afterthought.