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.
Other excluded areas included certain flood zones and in the vicinity of listed buildings.
From BBC • May 25, 2026
At a certain point, I realized that expecting too much was unwise.
From Los Angeles Times • May 25, 2026
In this system, certain rotational states are physically equivalent even when they spin in opposite directions.
From Science Daily • May 24, 2026
“You’re putting money on the outcome of potential events happening or you’re betting on certain probabilities with respect to future events.”
From Salon • May 24, 2026
I’d seen them on occasion in the dining hall, and we’d bumped into one another at the library, I was almost certain.
From "Glitch" by Laura Martin
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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