monotheism.
Belief in the One True God, defined by More as personal, immaterial and trinitarian.
Meaning & usage
Belief in the One True God, defined by More as personal, immaterial and trinitarian.
The belief in a single deity (one god or goddess); especially within an organized religion.
The belief that God is one person (Judaism, Unitarian Christianity, Islam), not three persons (Trinitarian Christianity, Hinduism)
Where this word comes from
Etymology tree Proto-Indo-European *men-der. Proto-Hellenic *mónwos Ancient Greek μόνος (mónos) Ancient Greek μονο- (mono-)der. English mono- Proto-Indo-European *dʰeh₁- Proto-Indo-European *-s Proto-Indo-European *dʰéh₁s Proto-Indo-European *dʰh₁sós Proto-Hellenic *tʰehós Ancient Greek θεός (theós) Ancient Greek θεο- (theo-)der. Latin theo-der. English theo- Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íd͏̌d͏̌ō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Indo-European *-mos Proto-Indo-European *-mós Ancient Greek -μός (-mós) Ancient Greek -ισμός (-ismós)der. English -ism English theism English monotheism A learned 17th-century coinage, mono- + theism, from (μονός (monós, “one”)) and (θεός (theós, “god, deity”) + -ισμός (-ismós)) The term parallels the earlier polytheism, atheism (the simplex theism being slightly later). The term was coined by Henry More, ca. 1660, in explicit juxtaposition with both atheism and polytheism. It was redefined through etymological fallacy by Daniel Webster ca. 1828.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.