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.
He said that as a result, some schools had not been able to offer home economics, computing and technical studies classes to certain year groups.
From BBC • Jun. 8, 2026
The benefits were seen not only in patients with diabetes but also in those with non-diabetic CKD and certain forms of glomerular disease.
From Science Daily • Jun. 8, 2026
It’s only fitting that they should take their World Cup curtain calls together—even if we were certain it was going to be eight years ago.
From The Wall Street Journal • Jun. 8, 2026
The move to lower prices on certain items seems like a savvy extension of its policy.
From Barron's • Jun. 8, 2026
I wasn’t certain if there would be a place for me to change clothes at Formann’s, so I thought it would be safest to arrive already wearing the outfit.
From "The Red Car to Hollywood" by Jennie Liu
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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