unimpeachable (adj.)
- absolute
- actual
- believable
- blameless
- clean
- conceivable
- confirmable
- credible
- creditable
- decent
- demonstrable
- erect
- estimable
- ethical
- factual
- fair
- fiduciary
- good
- high-minded
- high-principled
- historical
- honest
- honorable
- immaculate
- incontestable
- incontrovertible
- inculpable
- indisputable
- indubitable
- inviolate
- irrefutable
- irreproachable
- just
- law-abiding
- manly
- moral
- noble
- plausible
- principled
- provable
- pure
- real
- reliable
- reputable
- respectable
- right
- right-minded
- righteous
- self-evident
- spotless
- stainless
- sterling
- tenable
- testable
- truehearted
- trustworthy
- trusty
- unanswerable
- unblemished
- uncorrupted
- undefiled
- undeniable
- unexceptionable
- unobjectionable
- unquestionable
- unspotted
- unstained
- unsullied
- untarnished
- upright
- upstanding
- verifiable
- virtuous
- worthy
