The term 'utterly exhausted' can be described by four crossword solutions: BEAT (4 letters), DEAD (4 letters), SPENT (5 letters), and dogtired (8 letters). BEAT implies a physical exhaustion, as if one has been beaten down by fatigue. DEAD implies a mental exhaustion, as if one has no energy left to think or act. SPENT implies a financial exhaustion, as if one has used up all of their resources. Dogtired implies a general exhaustion, as if one is too tired to do anything else. All of these words together paint a picture of someone who is completely and utterly exhausted.