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.
Didier Deschamps’ men battered Ukraine 4-0 on Thursday to put their World Cup fate beyond any remaining doubt, establishing an unassailable six-point lead at the top of the group. Ben Verbrugge, MSNBC Newsweek, 16 Nov. 2025 Not some perfect and unassailable view of the world but the occasional flicker of double vision, the brief, destabilizing reminder of other people’s minds, humming along in their baffling, alien ways. Deborah Treisman, New Yorker, 16 Nov. 2025 Once Lamb finally takes his theory of the case to the Park, too, hitting them with unassailable logic that their Libyan adversaries are turning the tables on them out of revenge for a 2013 coup attempt. Scott Tobias, Vulture, 22 Oct. 2025 Back last year after a prolonged hiatus, the VS show's prominent post in pop culture remains unassailable, as much an event to watch as an awards show or holiday special. Anna Kaufman, USA Today, 16 Oct. 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 24 Nov. 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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