Why this word is great
UNIMPEACHABILITY — [Noun] The state or condition of being unimpeachable; blamelessness. From unimpeachable ("not impeachable; beyond reproach") + -ity (suffix forming nouns denoting state or condition). Unlike "infallibility" (which implies absolute freedom from error) or "irreproachability" (which suggests moral perfection), unimpeachability is a fortress of legal and formal integrity, a shield against accusation rather than a claim to flawlessness. It is the judge’s unshaken verdict, the diplomat’s stainless record, the witness whose testimony cracks no seams—a rare and brittle thing, like ice so clear it seems not to exist at all. The closer one examines it, the more it vanishes.