High excitement is an intense feeling of enthusiasm and exhilaration. It is often associated with activities such as extreme sports, roller coasters, or other thrilling experiences. The term 'high excitement' can be used to describe the feeling of being overwhelmed with joy and anticipation. The crossword solution for this term is 'FEVER, ' which is a physical response to intense emotions. FEVER is a common symptom of high excitement, as it is caused by the body's reaction to the rush of adrenaline.