know for certain

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.

"It is just the unknown that is scary. We don't know for certain what will happen now and that is what keeps us up at night."

From BBC • Apr. 24, 2026

Whatever the case, we know for certain that the bigger the games are, the higher the financial and personal stakes.

From Salon • Feb. 8, 2026

But the plaintiffs had doctors testify that they could not know for certain whether an infant with these defects would live for days, weeks, or maybe even a few months before suffering a painful death.

From Slate • Jan. 10, 2026

It’s impossible to know for certain what the Fed will say in this regard, which is why markets have yet to price this in.

From MarketWatch • Dec. 7, 2025

We shall never know for certain because in 1906 he was fatally run over by a carriage while crossing a Paris street.

From "A Short History of Nearly Everything" by Bill Bryson