1
as in one
known but not named a certain person told me that today is your birthday

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

2
3
4
5
as in reliable
not likely to fail chicken soup is grandma's certain cure for pretty much whatever ails you

Synonyms & Similar Words

Antonyms & Near Antonyms

6

Synonym Chooser

How does the adjective certain contrast with its synonyms?

Some common synonyms of certain are cocksure, positive, and sure. While all these words mean "having no doubt or uncertainty," certain may apply to a basing of a conclusion or conviction on definite grounds or indubitable evidence.

police are certain about the cause of the fire

When would cocksure be a good substitute for certain?

In some situations, the words cocksure and certain are roughly equivalent. However, cocksure implies presumptuous or careless positiveness.

you're always so cocksure about everything

When is it sensible to use positive instead of certain?

While the synonyms positive and certain are close in meaning, positive intensifies sureness or certainty and may imply opinionated conviction or forceful expression of it.

I'm positive that's the person I saw

When could sure be used to replace certain?

The words sure and certain are synonyms, but do differ in nuance. Specifically, sure usually stresses the subjective or intuitive feeling of assurance.

felt sure that I had forgotten something

Examples Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of certain The vehicles will be geofenced to certain neighborhoods in Tokyo, including Minato, Shinjuku, Shibuya, Chiyoda, Chūō, Shinagawa, and Kōtō. Andrew J. Hawkins, The Verge, 17 Dec. 2024 The chances of a rate cut when the Fed meets this week are all but certain, according to the CME FedWatch Tool, a measure of market sentiment. Max Zahn, ABC News, 16 Dec. 2024 Understanding these genes can provide insight into why certain individuals are predisposed to hair loss. Sarah Jividen, Verywell Health, 16 Dec. 2024 One thing is certain: Whatever approach works now is unlikely to work in three to six months. Elias Leight, Billboard, 16 Dec. 2024 See all Example Sentences for certain 
Recent Examples of Synonyms for certain
Adjective
  • Drinkwater didn't make one appearance in a Chelsea shirt last season, whilst Bakayoko spent the season in Italy on loan at AC Milan.
    SI.com, SI.com, 3 Aug. 2019
  • Decisions made by engineers today, in other words, will determine not how one car drives but how all cars drive.
    Johannes Himmelreich, BostonGlobe.com, 30 Mar. 2018
Adjective
  • Neame, while hopeful of another franchise, isn’t sure the spy thriller will get as far as his multi-generational drama set in a Yorkshire country house and around the lives of the Crawley family and their staff.
    Etan Vlessing, The Hollywood Reporter, 13 Dec. 2024
  • Ichiro is an all-time great and a sure first-ballot selection.
    Barry M. Bloom, Sportico.com, 12 Dec. 2024
Adjective
  • Generally speaking, hormonal imbalances don’t lead to stable emotions.
    Jeanne Ballion, Vogue, 13 Dec. 2024
  • Emotional readiness might include feeling stable, curious about new opportunities or prepared for structured routines.
    Diane Winiarski, Forbes, 13 Dec. 2024
Adjective
  • Legislators backing the law said a ban or sale was necessary to address national security concerns posed by the app’s ties to China.
    Andrew J. Campa, Los Angeles Times, 8 Dec. 2024
  • Let Mentorship Develop Organically Formal mentorship arrangements aren’t always necessary.
    Dr. Ruth Gotian, Forbes, 8 Dec. 2024
Adjective
  • And while that’s not a reason to abandon AI tools, a recent study should remind programmers that even reliable versions of the technology are still prone to bouts of weirdness—like claiming knee X-rays can prove someone drinks beer or eats refried beans.
    Andrew Paul, Popular Science, 13 Dec. 2024
  • Data validation is a critical first step in building reliable systems.
    John Case, Forbes, 12 Dec. 2024
Adjective
  • The district recently outlined definite cuts and future potential cuts on its website.
    Madeline Mitchell, The Enquirer, 12 Dec. 2024
  • While Elba and Reeves were clearly being light-hearted in their response, there's definite demand for more live-action Sonic, whether in film or series form.
    Gordon G. Chang, Newsweek, 11 Dec. 2024
Adjective
  • In fact, a 2023 survey by College Pulse found that only 49% of college students feel confident about their career prospects.
    Subha Barry, Forbes, 10 Dec. 2024
  • But while these global companies appeared confident in their strategies, tariffs could significantly hinder smaller brands.
    Kathryn Hopkins, WWD, 10 Dec. 2024
Adjective
  • The decision in the final weeks of President Joe Biden's administration sets up a fight over the future of California's vehicle regulations.
    David Shepardson, USA TODAY, 19 Dec. 2024
  • Monetary policy Policymakers at the European Central Bank announced their fourth and final rate cut of the year last Thursday.
    Chloe Taylor, CNBC, 18 Dec. 2024

Thesaurus Entries Near certain

Cite this Entry

“Certain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/certain. Accessed 23 Dec. 2024.

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