certain
Usage
What are other ways to say certain?
Certain, one of a handful of adjectives indicating full belief and trust that something is true, suggests that there are definite reasons that have freed one from doubt. Confident emphasizes the strength of the belief or the certainty of expectation felt. Positive implies emphatic certainty, which may even become overconfidence or dogmatism. Sure, the simplest and most general term, expresses mere absence of doubt.
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.
Such projections are based on certain assumptions and are not set in stone.
From BBC • Jun. 29, 2026
Brussels fears it will lose certain industries entirely if it does not act against a glut of cheap goods made in China threatening manufacturers in Europe.
From Barron's • Jun. 29, 2026
And remember when we were certain soccer could never catch on in this country?
From Los Angeles Times • Jun. 28, 2026
Despite its nickname, researchers are not certain that it is actually a planet.
From Science Daily • Jun. 28, 2026
But just a few minutes ago I was certain that he had been the one to torment me.
From "The Brightwood Code" by Monica Hesse
Vocabulary lists containing certain
The Real Deal: Synonyms for "True"
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List 1
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A Sure Thing: Synonyms for "Definite"
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