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.
Certain patients on a higher-dose Wegovy shot lost 27.7% of their body weight on average in a trial, its maker, Novo Nordisk, said.
From The Wall Street Journal • May 15, 2026
Certain nutrients and so-called superfoods were never meant to be heavily prioritized at the expense of other beneficial ingredients.
From Salon • May 7, 2026
Certain offenses are so egregious that they can result in immediate dismissal proceedings — without paychecks continuing to go out for prolonged periods.
From Los Angeles Times • May 5, 2026
Certain lots were found to have internal tubing tears, which risk under-delivering insulin to patients.
From Barron's • Apr. 30, 2026
Certain parents didn’t think they could trust any other kid around their little prince or princess.
From "The School for Whatnots" by Margaret Peterson Haddix
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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