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.
"I'm going to still give it absolutely everything and try and hassle them as much as I can and try and force them into not making certain corners."
From BBC • Jun. 6, 2026
Others are not risk-free: high doses of certain vitamins and minerals can cause toxicity, interfere with medications or produce unintended health effects.
From Science Daily • Jun. 6, 2026
Across the city, certain battleground precincts were so tight that no single candidate had a lead as of Wednesday’s count, on which The Times’ analysis was based.
From Los Angeles Times • Jun. 6, 2026
“I consciously avoid using it for certain tasks, like writing in English, because those are mental muscles I depend on,” he told me.
From The Wall Street Journal • Jun. 5, 2026
I felt certain that there would be more questions.
From "An Elephant in the Garden" by Michael Morpurgo
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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