monotheism

The term 'monotheism' is a modern scholarly construction, coined in the 17th century from ancient Greek elements to describe a specific theological concept. It directly combines 'monos' (single, alone) with 'theos' (god) and the abstract noun-forming suffix '-ismos'. This formation logically and literally builds the meaning "the state or doctrine of one god." While the Greek roots themselves have Proto-Indo-European ancestry—'monos' possibly linked to concepts of isolation and 'theos' of uncertain, perhaps pre-Greek, origin—the compound word itself tells a clear conceptual story. It was created to provide a precise, classical label for the belief system found in religions like Judaism, Christianity, and Islam, contrasting it with polytheism (many gods) and atheism (no god).

Structure: mono (one) + the (god) + ism (belief system) - mono: From Greek 'monos', meaning "alone, single, one". A combining form used in English to denote singularity. - the: From Greek 'theos', meaning "god, deity". A combining form used in words relating to God or gods. - ism: From Greek suffix '-ismos', forming nouns of action or practice. In English, it denotes a distinctive doctrine, theory, system, or practice.