The term 'follow relentlessly' can be broken down into four crossword solutions: DOG (3 letters), SHADOW (6 letters), STALK (5 letters), and TAIL (4 letters). The term 'follow relentlessly' implies that one should pursue something with determination and persistence. The four crossword solutions allude to this idea in different ways. For example, a DOG is known for its loyalty and will follow its owner without hesitation. To SHADOW someone is to follow them closely, while stalking implies a more sinister form of pursuit. Finally, the phrase 'TAIL someone' is often used to describe the act of following someone discreetly. All of these words together suggest that one should follow something with unwavering commitment.