The term 'COMPLETELY ZEN' can be broken down into two crossword solutions: CALM (4 letters) and ZEN (3 letters). The term 'CALM' is often used to describe a state of tranquility, peace, and composure. It is the opposite of being agitated or anxious. ZEN is a school of Mahayana Buddhism that emphasizes meditation and insight into one's true nature. It is a practice that seeks to bring about a state of enlightenment and inner peace. Together, the two words form the phrase 'COMPLETELY ZEN', which implies a state of total serenity and enlightenment.