unimpeachable
UK: ˌʌnɪmˈpiːtʃəbl | US: ˌʌnɪmˈpitʃəbl
adj. beyond doubt or reproach; completely trustworthy
adj. incapable of being challenged or discredited
unimpeachable = un<not> + impeach<accuse> + able<capable of>
- un (not, from Old English un-, a negative prefix)
- impeach (to accuse or challenge, from Old French empecher "to hinder," from Latin impedicare "to entangle")
- able (capable of, from Latin -abilis, a suffix forming adjectives)
Etymology Origin:
The word unimpeachable combines the negative prefix un- with impeach, originally meaning "to hinder" but later evolving to mean "to accuse" (as in legal contexts). The suffix -able adds the sense of capability. Thus, unimpeachable literally means "not capable of being accused," reflecting its modern meaning of being beyond reproach.
Her integrity is unimpeachable, making her the ideal candidate for the position.
The witness provided unimpeachable evidence that resolved the case.
His reputation as a scholar is unimpeachable after decades of rigorous research.
The document’s authenticity is unimpeachable, verified by multiple experts.
Only unimpeachable sources were cited in the investigative report.