Synonyms

for certain

Idioms

Also, for sure. Without doubt. For example, I can't tell for certain if this is the right color, or I know for sure that she has a new car. The first term dates from the early 1300s. The variant, dating from the late 1500s, is also used colloquially to express agreement or assert the truth of a statement, as in Mary is really bossy.—That's for sure, or Are you coming to the party?—For sure I am.

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.

But one thing’s for certain: It’s going to take solutions, not slogans.

From MarketWatch • Jun. 17, 2026

In a seven-page memo, he also said that tying the hands of future councils by locking in spending for certain programs goes against the city’s financial policies.

From Los Angeles Times • Jun. 17, 2026

Instead, Tehran would be given gradual access to the funds in exchange for certain goods, in an arrangement akin to Iraq’s oil-for-food program, say Middle East officials involved in the talks.

From The Wall Street Journal • Jun. 15, 2026

"Obviously, no-one knows for certain, but what people are sure about is that it comes from Oxford. There are many documentary sources confirming that it was a word coined by students there."

From BBC • Jun. 13, 2026

But when exam results were read aloud, I knew for certain I would never be left behind.

From "March Forward, Girl" by Melba Pattillo Beals

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

for certain

Example Sentences

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