The term 'FLY HIGH' can be summarized by two crossword solutions: SOAR (4 letters) and AVIATE (6 letters). SOAR means to rise or glide through the air, usually with little or no effort. It is often used to describe birds, planes, and other objects that are able to move through the air. AVIATE, on the other hand, means to operate or navigate an aircraft. This term is typically used to refer to the activity of flying an airplane or other type of aircraft. Both terms can be used to describe the act of flying high in the sky.