swear up and down

idiom

: to state (something) very strongly and sincerely : to insist

She swore up and down (that) she didn't do it.

Examples of swear up and down in a Sentence

Recent Examples on the Web Southerners will swear up and down by a dish of Hoppin’ John to bring a year’s worth of good vibes. —

Emily Heil, Washington Post, 29 Dec. 2022

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“Swear up and down.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/swear%20up%20and%20down. Accessed 24 Apr. 2024.

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