The term 'pursue stealthily' can be summed up by the crossword solution 'STALK, ' which is a five-letter word. Stalking is a form of harassment that involves following, monitoring, or observing someone without their consent. It is often done in a way that causes fear or distress to the victim. Stalking can include physical, verbal, or electronic contact, and can be done by an individual or a group. Stalking is a serious crime and can have serious consequences for the perpetrator.