Nonbelievers are individuals who do not accept the existence of a higher power or deity. The term encompasses a variety of different groups, including pagans (6 letters), agnostics (9 letters), INFIDELS (8 letters), and atheists (8 letters). Pagans are those who practice polytheistic religions, such as ancient Greek and Roman religions. Agnostics are those who believe that the existence of a higher power is unknowable. INFIDELS are those who reject the beliefs of a particular religion, while atheists are those who reject the existence of any higher power.