•bias, · the turning or bending of any wave, such as a light or sound wave, when it passes from one medium into another of different optical density · a person's favourite member of an idol group, such as K-pop band
köken: Probably borrowed from Old Occitan biais (“oblique direction”), of uncertain origin. Possibly via Vulgar Latin *bigassius from Ancient Greek ἐπικάρσιος (epikársios, “athwart”), from ἐπί (epí, “upon”) + κάρσιος (kársios, “oblique”) (root Proto-Indo-European *(s)ker- (“to cut”)); alternatively (preferred by TFLi) from Vulgar Latin *biaxius "with two axes".
köken: Probably a back-formation of the illative form harhaan, meaning "astray" but perhaps originally "apart", metathesized form of harahan, originally the illative of hara (compare hara > haralle (“apart”)).