come hell or high water

phrase

informal
used to say that something will definitely happen or be done even though other events or situations might make it difficult
I will be there on time, come hell or high water.

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“Come hell or high water.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/come%20hell%20or%20high%20water. Accessed 9 Mar. 2026.

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