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belief

American  
[bih-leef] / bɪˈlif /

noun

  • beliefs
    plural
  1. An image of the word belief as defined by something believed; an opinion or conviction.

    something believed; an opinion or conviction.

    a belief that the earth is flat.

    Synonyms:
    persuasion, conclusion, tenet, view
  2. confidence in the truth or existence of something not immediately susceptible to rigorous proof.

    a statement unworthy of belief.

    Synonyms:
    assurance
  3. confidence; faith; trust.

    a child's belief in his parents.

  4. a religious tenet or tenets; religious creed or faith.

    the Christian belief.

    Synonyms:
    dogma, doctrine

belief British  
/ bɪˈliːf /

noun

  1. a principle, proposition, idea, etc, accepted as true

  2. opinion; conviction

  3. religious faith

  4. trust or confidence, as in a person or a person's abilities, probity, etc

"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

Synonym Usage

Belief, certainty, conviction refer to acceptance of, or confidence in, an alleged fact or body of facts as true or right without positive knowledge or proof. Belief is such acceptance in general: belief in astrology. Certainty indicates unquestioning belief and positiveness in one's own mind that something is true: I know this for a certainty. Conviction is settled, profound, or earnest belief that something is right: a conviction that a decision is just.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

Etymology

Origin of belief

First recorded in 1125–75; earlier bile(e)ve (noun use of verb); replacing Middle English bileave, equivalent to bi- be- + leave (probably from Old English -lēafa “belief”); cognate with Dutch geloof, German Glaube; akin to Gothic galaubeins

Explanation

A belief is an idea one accepts as being true or real. Many children have a strong belief that the Tooth Fairy really does exist. The noun belief replaced the Old English word geleafa, meaning “belief, faith,” in the late 12th century. A belief is an idea one usually holds with conviction and importance. In a religious context, the Ancient Greeks held the belief that many gods existed, controlling their fate, while Christianity began with the belief that only one God exists. You can also have belief in yourself in the face of a challenge.

Keep Reading on Vocabulary.com

Vocabulary lists containing belief

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:

The belief inside ABC is that music-driven award shows have broader appeal than movies and television, which have become more niche in the age of streaming.

From Los Angeles Times ● Oct. 12, 2026

Singer Beverley Knight said she hoped audiences watching her latest musical would leave feeling "empowered" and with the belief that their voices can make a difference.

From BBC ● Oct. 8, 2026

The former term signifies the belief that the soundest interpretation of a law will have first determined its public meaning at the time of its passage.

From The Wall Street Journal ● Oct. 5, 2026

But to hear Florence Pugh deliver it as Cathy’s belief, and the establishing paradigm of Kazan’s limited series, changes things.

From Salon ● Oct. 3, 2026

“You have seen things that defy belief, have you not?”

From "The Night Circus" by Erin Morgenstern

Among its provisions, that law requires parental notification and consent, with an opt-out option, before students participate in surveys asking about sensitive private information such as religious beliefs, sexual behavior or mental health problems.

From Los Angeles Times ● Oct. 6, 2026

In 2018, the Supreme Court ruled that a commission enforcing a state antidiscrimination law had violated Phillips’s religious rights by displaying hostility toward his beliefs.

From The Wall Street Journal ● Oct. 3, 2026

In addition to being ideologically divided, young men and women have vastly different beliefs about religion and gender.

From Salon ● Oct. 2, 2026

As speculation swirled about why employees at OpenAI and Anthropic were speaking so freely about their personal beliefs, Korbak jumped into the public discourse.

From Barron's ● Oct. 2, 2026

“People whose actions and beliefs went against the church or the establishment.”

From "A High Five for Glenn Burke" by Phil Bildner

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