belief
Americannoun
-
something believed; an opinion or conviction.
a belief that the earth is flat.
- Synonyms:
- persuasion, conclusion, tenet, view
-
confidence in the truth or existence of something not immediately susceptible to rigorous proof.
a statement unworthy of belief.
- Synonyms:
- assurance
-
confidence; faith; trust.
a child's belief in his parents.
-
a religious tenet or tenets; religious creed or faith.
the Christian belief.
noun
-
a principle, proposition, idea, etc, accepted as true
-
opinion; conviction
-
religious faith
-
trust or confidence, as in a person or a person's abilities, probity, etc
Related Words
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
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.
Vocabulary lists containing belief
"The Experiment" and "Superstition"
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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.
Belief in heaven and hell is positively associated with economic growth.
From The Wall Street Journal • Apr. 19, 2026
Karp’s new book, “The Technological Republic: Hard Power, Soft Belief, and the Future of the West,” mixes the Cold War ideology of the 1950s with the emerging technology of the 21st century.
From Salon • Jul. 3, 2025
Kondo: Belief is the key word for me.
From Los Angeles Times • Jul. 17, 2024
Their findings, published in 2006, made headlines for contradicting the prevailing wisdom: “Study Puts a Cork in Belief That a Little Wine Helps the Heart,” The Los Angeles Times reported.
From Seattle Times • Feb. 17, 2024
I fear, Shun, faith — look ye, I fear he is fled from some tyrant Master, which is Capt. Draper’s Belief.
From "The Astonishing Life of Octavian Nothing, Traitor to the Nation, Volume I: The Pox Party" by M.T. Anderson
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
