Bluff \Bluff\, a. [Cf. OD. blaf flat, broad, blaffaert one with a broad face, also, a boaster; or G. verbl["u]ffen to confuse, LG. bluffen to frighten; to unknown origin.] 1. Having a broad, flattened front; as, the bluff bows of a ship. ``Bluff visages.'' --Irving. [1913 Webster] 2. Rising steeply with a flat or rounded front. ``A bluff or bold shore.'' --Falconer. [1913 Webster] Its banks, if not really steep, had a bluff and precipitous aspect. --Judd. [1913 Webster] 3. Surly; churlish; gruff; rough. [1913 Webster] 4. Abrupt; roughly frank; unceremonious; blunt; brusque; as, a bluff answer; a bluff manner of talking; a bluff sea captain. ``Bluff King Hal.'' --Sir W. Scott. [1913 Webster] There is indeed a bluff pertinacity which is a proper defense in a moment of surprise. --I. Taylor. [1913 Webster]