Synonyms and antonyms of certain in English
These are words and phrases related to certain. Click on any word or phrase to go to its thesaurus page. Or,
go to the definition of certain.
CERTAIN ABOUT SOMETHING
I feel certain that this change will be for the best.
Synonyms and examples
know/
I can't say for certain, but I think he's coming to the party.
sure
Don't worry - I'm sure it won't be a problem.
positive
"Are you sure you let the cat in?" "I'm positive."
be sure of
He's the one who stole my bike - I'm sure of it!
for sure
One thing's for sure: I'll never go on a date with her again.
beyond a shadow of a doubt
It has been proven beyond a shadow of a doubt that the medication is effective.
you can bet your life
He's such a careful writer, you can bet your life that every single detail is thoroughly researched.
it's safe to say (that)
I think it's safe to say that he will win a majority of votes.
no doubt
You will no doubt want to see the evidence.
bound
He's bound to have the spare parts.
confident
I am confident that doctors will find a cure.
convinced
Police are convinced they have the right suspect in custody.
Antonyms and examples
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If you are certain about something, you know that it is accurate or true, or that it will happen.
certain | American Thesaurus
These are words and phrases related to certain. Click on any word or phrase to go to its thesaurus page. Or,
go to the definition of certain.
I'm certain I put the book on the table.
Antonyms
After the Boston Tea Party, war with England seemed certain. That the diamonds are real is certain.
Synonyms
A certain person has been asking questions about you.
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said when you are promising to keep a secret
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