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.
Those with uncontrolled high blood pressure, certain heart rhythm disorders, severe anxiety, insomnia, or other conditions that require caffeine restriction should speak with a healthcare provider before increasing their coffee intake.
From Science Daily ● Jul. 25, 2026
Hearn is a little less certain Fury will make the journey to Saudi Arabia.
From BBC ● Jul. 24, 2026
Sexual equality requires the acknowledgment and maintenance of certain distinctions between men and women.
From The Wall Street Journal ● Jul. 24, 2026
While retirement planning often focuses on accumulating assets, the researchers argue that advisers and retirees should also pay close attention to future liabilities, particularly the essential expenses that are almost certain to occur.
From MarketWatch ● Jul. 24, 2026
In recent times, scientists have learned that the two hemispheres specialize in certain skills.
From "Phineas Gage" by John Fleischman
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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