unassailable

adjective

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

Synonyms of unassailable

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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.
Regulators blocked it, fearing the deal would create an unassailable monopoly. — Tiisetso Motsoeneng, semafor.com, 8 June 2026 Northern, post-industrial areas such as Makerfield were viewed for years as safe and unassailable Labour seats. — Katie Marie Davies, Christian Science Monitor, 18 June 2026 One thing that’s remained constant, though, is the unassailable culinary reputation of Buford Highway. — Su-Jit Lin - For The Ajc, AJC.com, 7 June 2026 But there is something noble in Gill’s version, in particular the idea that the truth is unassailable and inarguable and therefore the only place from which a real conversation can sprout. — Stephen Deusner, SPIN, 15 June 2026 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

Rhymes for unassailable

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Browse Nearby Words

unaspiring
unassailable
unassailed
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Cite this Entry

“Unassailable.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/unassailable. Accessed 7 Jul. 2026.

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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
-blē How to pronounce unassailable (audio)
adverb

More from Merriam-Webster on unassailable

Nglish: Translation of unassailable for Spanish Speakers

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