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be certain of

VERB
believe
Synonyms
STRONGEST
accept admit conclude consider have hold regard suppose think trust understand
STRONG
accredit affirm buy conceive credit deem posit postulate presuppose swallow
WEAK
attach weight to be convinced of be credulous be of the opinion count on fall for give credence to have faith in have no doubt keep the faith lap up place confidence in presume true reckon on rest assured swear by take as gospel take at one's word take for granted take it
Antonyms
STRONGEST
abandon deny disbelieve discard dismiss dispute disregard exclude forget ignore neglect refuse reject
WEAK
distrust

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.

With their title hopes in tatters, Liverpool can't be certain of reaching the Champions League last 16 either after a second defeat in five games in the tournament.

From Barron's • Nov. 26, 2025

As to what the courts do, I would like to think they would block it, but again, I can’t be certain of that.

From Slate • Mar. 29, 2025

“We had to be certain of our ground,” said Baroness May, describing the “pin-drop” silence as she stood in the House of Commons to accuse Russia.

From BBC • Oct. 10, 2024

While the title is still in City’s hands, it will have to win the remaining two games to be certain of a record fourth-straight English league title.

From Seattle Times • May 12, 2024

"I doubt it. Besides, we cannot be certain of the relationship. I'd like to see the documents in Crow's folder again."

From "The Westing Game" by Ellen Raskin

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