to the best of one's knowledge

idiom

Definition of to the best of one's knowledge

1 used to say that a person thinks something is true but that there may be something he or she does not know which makes it untrueTo the best of his knowledge, no one had called all morning.
2 : as truthfully as possible I answered their questions to the best of my knowledge.

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“To the best of one's knowledge.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/to%20the%20best%20of%20one%27s%20knowledge. Accessed 1 Dec. 2020.

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