(a.) Not impeachable; not to be called in question; exempt from liability to accusation; free from stain, guilt, or fault; irreproachable; blameless; as, an unimpeachable reputation; unimpeachable testimony.

Christian above suspicion absolute actual admitting no question believable blameless clean colorable conceivable confirmable credible creditable decent demonstrable demonstratable erect estimable ethical factual fair fiduciary full of integrity good high-minded high-principled highly respectable historical honest honorable immaculate inappealable incontestable incontrovertible inculpable indisputable indubitable inviolate irrefragable irrefutable irreprehensible irreproachable irreprovable just law-abiding law-loving law-revering manly moral noble plausible principled provable pure real reliable reputable respectable right right-minded righteous self-evident spotless stainless sterling tenable testable true-dealing true-devoted true-disposing true-souled true-spirited truehearted trustworthy trusty unanswerable unarraignable unblamable unblameworthy unblemished uncensurable unconfutable uncorrupt uncorrupted undefiled undeniable unexceptionable unindictable unobjectionable unquestionable unrefutable unspotted unstained unsullied untarnished upright uprighteous upstanding verifiable virtuous worthy worthy of faith yeomanly