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  • unitarian
    unitarian
    noun
    a person who maintains that God is one being, rejecting the doctrine of the Trinity.
  • Unitarian
    Unitarian
    noun
    theol a person who believes that God is one being and rejects the doctrine of the Trinity

unitarian

American  
[yoo-ni-tair-ee-uhn] / ˌju nɪˈtɛər i ən /

noun

  1. a person who maintains that God is one being, rejecting the doctrine of the Trinity.

  2. (initial capital letter) a member of a liberal religious denomination founded upon the doctrine that God is one being, and giving each congregation complete control over its affairs.

  3. an advocate of unity or centralization, as in government.


adjective

  1. (initial capital letter) pertaining to the Unitarians or their doctrines; accepting Unitarianism; belonging to the Unitarians.

  2. unitary.

Unitarian 1 British  
/ ˌjuːnɪˈtɛərɪən /

noun

  1. theol a person who believes that God is one being and rejects the doctrine of the Trinity

  2. ecclesiast an upholder of Unitarianism, esp a member of the Church ( Unitarian Church ) that embodies this system of belief

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. of or relating to Unitarians or Unitarianism

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
unitarian 2 British  
/ ˌjuːnɪˈtɛərɪən /

noun

  1. a supporter of unity or centralization

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. of or relating to unity or centralization

  2. another word for unitary

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of unitarian

1680–90; < New Latin ūnitāri ( us ) ( Latin ūnit ( ās ) unity + -ārius -ary ) + -an

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

In a series of cases over the past 15 years, the Supreme Court moved in an unambiguously unitarian, pro-presidential direction.

From Salon Jul. 1, 2026

In a series of cases over the past 15 years, the Supreme Court has moved in an unambiguously unitarian, pro-presidential direction.

From Salon Oct. 8, 2025

All of the grownups belonged to churches, except for one wiseguy who described himself as a lapsed unitarian.

From Time Sep. 26, 2014

Sorensen evinced a Midwestern sensibility, a unitarian compassion and an unmatched, razor-sharp wit.

From Time Nov. 19, 2010

Speaking of the Vedas, the author says that every one derives from them arguments in favor of his own creed, whether it be philosophical, mystical, unitarian, atheistic, Judaic, or Christian.

From The Religions of India Handbooks on the History of Religions, Volume 1, Edited by Morris Jastrow by Edward Washburn Hopkins

Right around that time, a Unitarian Universalist church was built near our home.

From Salon Jun. 1, 2026

In 1953 Updike married Mary Pennington, a Radcliffe graduate and the daughter of a Unitarian minister.

From The Wall Street Journal Oct. 10, 2025

Rev. Jason Cook, a minister at Tapestry, a Unitarian Universalist congregation, wore his traditional white collar and a colorful stole resembling stained glass when he arrived at immigration court in Santa Ana last Friday.

From Los Angeles Times Jul. 2, 2025

It also cites theological teachings allowing abortion in at least some circumstances by Islamic, Episcopal, Unitarian Universalist and Pagan faiths.

From Washington Times Dec. 6, 2023

Every fifteen minutes the readers paused for a short prayer: Catholic, Jewish, Unitarian, or Protestant.

From "Boots on the Ground: America's War in Vietnam" by Elizabeth Partridge

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