Thesaurus

certain

adjective

Synonyms & Antonyms of certain

1 known but not named
  • a certain person told me that today is your birthday

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2 having or showing a mind free from doubt
  • I'm certain that they'll arrive on time

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4 impossible to avoid or evade
  • as he got older, the athlete began to feel the certain effects of the aging process on his body

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5 not likely to fail
  • chicken soup is grandma's certain cure for pretty much whatever ails you

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See the Dictionary Definition 

Choose the Right Synonym for certain

sure, certain, positive, cocksure mean having no doubt or uncertainty. sure usually stresses the subjective or intuitive feeling of assurance. felt sure that I had forgotten something 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 positive intensifies sureness or certainty and may imply opinionated conviction or forceful expression of it. I'm positive that's the person I saw cocksure implies presumptuous or careless positiveness. you're always so cocksure about everything

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Time Traveler for certain

Time Traveler

The first known use of certain was in the 13th century

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Cite this Entry

“Certain.” The Merriam-Webster.com Thesaurus, Merriam-Webster Inc., https://www.merriam-webster.com/thesaurus/certain. Accessed 19 January 2020.

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More from Merriam-Webster on certain

Dictionary: Definition of certain

Rhyming Dictionary: Words that rhyme with certain

Spanish Central: Translation of certain

Nglish: Translation of certain for Spanish Speakers

Britannica English: Translation of certain for Arabic Speakers

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