Thesaurus

unbreachable

adjective

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The first known use of unbreachable was in 1866

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Last Updated

24 Feb 2020

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“Unbreachable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/unbreachable. Accessed 31 Mar. 2020.

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