unassailable
Pronunciation:
/ˌʌnəˈseɪləbl̩/noun
Definitions
Something, such as a belief, that cannot be assailed.
adjective
Definitions
Secure against attack; impregnable.
(by extension) Undeniable, incontestable or incontrovertible.
Example: She won the debate with her unassailable logic.
Synonyms:incontestableunopposable