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.
The findings suggest that stimulating nerves in the ear could eventually help certain people whose blood pressure remains elevated despite taking medication.
From Science Daily ● Oct. 24, 2026
The BBC does not know for certain whether Patel is connected to these sites, but File on 4 Investigates has established some sites are linked to an online reputation management company based in Dubai.
From BBC ● Oct. 24, 2026
“We’re all held to a certain standard,” Whittington said.
From Los Angeles Times ● Oct. 24, 2026
One problem scientists and Wall Street are puzzling over is that a different study showed using Keytruda alone before surgery appeared to produce a similar result to the vaccine in certain melanoma patients.
From The Wall Street Journal ● Oct. 23, 2026
The ringing in my ears was the loudest thing in the room, and so I couldn’t say for certain what he said.
From "The Brightwood Code" by Monica Hesse
Vocabulary lists containing certain
The Real Deal: Synonyms for "True"
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
List 1
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
A Sure Thing: Synonyms for "Definite"
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Random Word
Spin the wheel and learn a new word!
Get a word