The term 'maximum degree' can be broken down into two crossword solutions: HILT (4 letters) and NTH (3 letters). HILT stands for Highest Intensity Level of Training, which is a type of physical training that focuses on improving strength, power, and speed. NTH stands for the highest degree or order, which is the highest level of something that can be achieved. Together, the two terms form the phrase 'maximum degree, ' which refers to the highest level of something that can be achieved.