The term 'come to a head' is often used to describe a situation that has reached its CLIMAX or peak. The crossword solutions for this term are CLIMAX (6 letters), TAPER (5 letters), BOILUP (6 letters), and BOILOVER (8 letters). CLIMAX refers to the highest point of intensity or action in a situation, while TAPER implies a gradual decrease in intensity or activity. BOILUP and BOILOVER both refer to a situation that has become so intense that it has gone beyond its limits and is now out of control.