Reaches the Zenith is a phrase that means to reach the highest point or peak of success. The term can be used to describe a person, an event, or an accomplishment. The crossword solution for this phrase is 'Crests, ' which is a noun that refers to the highest point of a hill or mountain. It can also be used to refer to the highest point of a wave or other body of water. In this context, it is used to represent the highest point of success.