on the presumption that

idiom

Definition of on the presumption that

: believing that Thousands of people used this drug on the presumption that it was safe.

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“On the presumption that.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on%20the%20presumption%20that. Accessed 22 Sep. 2020.

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