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know for certain

VERB

tell

Synonyms

STRONGEST

identify know learn see

STRONG

ascertain clinch comprehend deduce determine differentiate discover discriminate distinguish divine perceive recognize

WEAK

be sure find out make out

Antonyms

STRONGEST

overlook

STRONG

confuse misinterpret miss misunderstand mix up

WEAK

estimate figure guess listen

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

Since shadow docket rulings are unsigned, we can’t know for certain the usual tally of supporting and opposing justices.

From Salon • Apr. 22, 2026

We can’t know for certain if the Values Bridge data reveals a slow trend away from the centrality of family in the American psyche or a sudden drop, or why in either case.

From The Wall Street Journal • Nov. 20, 2025

A lot of people are fine and they don’t have any complications, but I don’t know for certain what the outcome will be for me.

From MarketWatch • Oct. 9, 2025

SABIO, MARIA: We don’t know for certain he’s okay.

From "The First State of Being" by Erin Entrada Kelly

know for certain

Example Sentences

Related Words