This argument is unassailable.
Source: tatoeba (3209761)
Unassailable
//ˌʌnəˈseɪləbl̩//
Synonyms for "unassailable" (45 found)
Ranked by relevance and common usage.
Closest matches (9)
Adjective(2 words)
Adjective(2 words)
Strong matches (14)
Related words (22)
Related word relations
OpenGloss and ConceptNet supply richer edges like generalizations, collocations, and derivations.
Synonyms
2 entriesderived
2 entriesderived from
1 entriesrelated to
6 entriessimilar
6 entriesTranslations
24 translations across 11 languages.
Bulgarian
2 entries- неопровержим adj (undeniable, incontestable or incontrovertible)
- непристъпен adj (secure against attack; impregnable)
Czech
3 entries- apodiktický adj (undeniable, incontestable or incontrovertible)
- nedobytný adj (secure against attack; impregnable)
- nenapadnutelný adj (undeniable, incontestable or incontrovertible)
Dutch
3 entries- onaantastbaar adj (undeniable, incontestable or incontrovertible)
- onbetwistbaar adj (undeniable, incontestable or incontrovertible)
- onneembaar adj (secure against attack; impregnable)
French
4 entries- inattaquable adj (secure against attack; impregnable)
- incontestable adj (undeniable, incontestable or incontrovertible)
- indéniable adj (undeniable, incontestable or incontrovertible)
- inexpugnable adj (secure against attack; impregnable)
German
2 entries- unanfechtbar adj (undeniable, incontestable or incontrovertible)
- unangreifbar adj (secure against attack; impregnable)
Irish
3 entries- do-ionsaithe adj (undeniable, incontestable or incontrovertible)
- dobhréagnaithe adj (undeniable, incontestable or incontrovertible)
- dosháraithe adj (undeniable, incontestable or incontrovertible)
Macedonian
1 entries- неприкосновен adj (undeniable, incontestable or incontrovertible)
Polish
1 entries- bezsporny adj (undeniable, incontestable or incontrovertible)
Portuguese
1 entries- incontestável adj (undeniable, incontestable or incontrovertible)
Russian
2 entries- неопровержи́мый adj (undeniable, incontestable or incontrovertible)
- неприступный adj (secure against attack; impregnable)
Spanish
2 entries- incontestable adj (undeniable, incontestable or incontrovertible)
- inexpugnable adj (secure against attack; impregnable)
Sample sentences
9 total sentences available.
The mountain seemed unassailable.
Source: tatoeba (10117381)
It seemed remote and unassailable.
Source: tatoeba (10117385)
Being convinced of your own unassailable rationality is like being convinced of the solidity of a mirage.
Source: tatoeba (13075231)
Showing 4 of 9 available sentences.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.