Be alive is a phrase that is used to describe the state of being alive. It can refer to both physical and mental states. The term is often used to express joy or appreciation for life. To be alive is to LIVE, EXIST, and BREATHE. The crossword solutions for the term 'be alive' are 'LIVE' (4 letters), 'EXIST' (5 letters), and 'BREATHE' (7 letters). These words all describe different aspects of being alive, from the physical act of breathing to the mental state of existing.