know for a fact

idiom

: to be certain
I know for a fact that he did it.

Examples of know for a fact in a Sentence

Recent Examples on the Web And if anything ever does shake you, know for a fact that dad will ALWAYS be there to hold you down. Alexandra Hurtado, Peoplemag, 21 Dec. 2023 However, there’s no failure-proof way to know for a fact that your startup idea is going to lead to a successful business. Yec, Forbes, 3 May 2023 However, there’s no failure-proof way to know for a fact that your startup idea is going to lead to a successful business. Yec, Forbes, 3 May 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'know for a fact.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Dictionary Entries Near know for a fact

Cite this Entry

“Know for a fact.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/know%20for%20a%20fact. Accessed 22 Jul. 2024.

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