The crossword solution for the term INTERROGATES RELENTLESSLY is 'PUMPS'. This term refers to a type of questioning that is done without pause or rest. It is often used in legal settings, such as during a trial or police interrogation, and involves asking the same questions over and over again in an effort to get the desired answer. The relentless nature of this type of questioning can be very intimidating and can lead to false confessions or other inaccurate information.