the doctrine or belief that there is only one God.
Related formsmon·o·the·ist, noun, adjectivemon·o·the·is·tic, mon·o·the·is·ti·cal, adjective
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for monotheist
Historical Examples of monotheist
When a believer in two is a polytheist, how can a believer in six be a monotheist?
Unlike Cyrus, he was at least a monotheist, if not a thoroughgoing Zoroastrian.
This king-priest is a monotheist, though he is not of the family of Abraham.
He was a monotheist, and he saw his God in every thing, every event, every place.
The intelligence is monist or pantheist, the will monotheist or egoist.
British Dictionary definitions for monotheist
Derived Formsmonotheist, noun, adjectivemonotheistic, adjectivemonotheistically, adverb
the belief or doctrine that there is only one God
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Word Origin and History for monotheist
"belief that there is but one god," 1650s, from Greek mono-, comb. form of monos "single, alone" (see mono-) + theos "a god" (see Thea).
Online Etymology Dictionary, © 2010 Douglas Harper
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.