The crossword solution for the term 'Be Delirious' is 'RAVE'. RAVE is a type of dance party that originated in the late 1980s and early 1990s. It typically involves electronic music, strobe lights, and a large crowd of people dancing. RAVE parties are often associated with drug use, but they can also be enjoyed without drugs. The term 'Be Delirious' is often used to describe the feeling of being in a RAVE, as it is an intense and ecstatic experience.