unassailable

adjective

un·​as·​sail·​able ˌən-ə-ˈsā-lə-bəl How to pronounce unassailable (audio)
: not assailable : not liable to doubt, attack, or question
an unassailable argument
an unassailable alibi
unassailability noun
unassailableness noun
unassailably adverb

Examples of unassailable in a Sentence

one of the unassailable beliefs of that political party
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The task was immense: to select a new presidential nominee from a field that had largely cleared out to accommodate Trump's seemingly unassailable path. Theo Burman, MSNBC Newsweek, 13 July 2025 The next step in their original plan was to connect that quantum foundation to a new bedrock — some relatively unassailable set of math problems that are even more intractable than those in NP. Ben Brubaker, Quanta Magazine, 25 July 2025 After Álex crashed out of the Dutch MotoGP, Marc cemented a 68-point championship lead, one which might look unassailable, even with 12 races remaining. Jonathan Hawkins, CNN Money, 11 July 2025 At the moment, his priority is shoring up the lone weakness from an otherwise unassailable rookie campaign. Dennis Lin, The Athletic, 25 Mar. 2025 See All Example Sentences for unassailable

Word History

First Known Use

1596, in the meaning defined above

Time Traveler
The first known use of unassailable was in 1596

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Cite this Entry

“Unassailable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unassailable. Accessed 22 Aug. 2025.

Kids Definition

unassailable

adjective
un·​as·​sail·​able ˌən-ə-ˈsā-lə-bəl How to pronounce unassailable (audio)
: not assailable : not open to doubt, attack, or question
unassailably adverb

More from Merriam-Webster on unassailable

Last Updated: - Updated example sentences
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