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.
Theobald said studies on male athletes had already linked contact sports with certain brain conditions, but a comparable long-term study "has never been done on women".
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
The company plans to offer notes to certain professional investors under its $30 billion global medium-term note program.
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 glance down at the water, certain that the hooves of the two thousand wild horses galloping through my chest are making ripples in the water.
From "Red Flags and Butterflies" by Sheryl Azzam
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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