Found 2 items, similar to unimpeachably.
English → English (WordNet) Definition: unimpeachably unimpeachably adv : without question; “Fred Winter is unquestionably the jockey to follow”; “they hired unimpeachably first-rate faculty members” [syn: unquestionably]
English → English (gcide) Definition: Unimpeachably Unimpeachable \Un`im*peach"a*ble\, 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. --Burke. -- Un`im*peach"a*ble*ness, n. -- Un`im*peach"a*bly, adv. [1913 Webster]