deep-seated

The compound adjective 'deep-seated' is a metaphorical extension of a physical concept. The first element, 'deep', originates from the Proto-Germanic deupaz, conveying the idea of profound depth. The second element, 'seated', derives from the Old Norse sæti (a seat) via Old English, carrying the sense of being settled or fixed in a position. When combined, the literal image is of something settled or positioned far within, a concept which, by the late 17th century, evolved to describe abstract qualities like emotions, prejudices, or problems that are firmly ingrained and not superficial. This evolution follows a common pattern where spatial metaphors are applied to psychological or societal conditions.

Structure: deep + seated - deep: From Old English dēop (adjective), of Germanic origin; related to Dutch diep and German tief. Functions as an intensifier meaning 'profoundly' or 'far within'. - seated: From the verb seat, meaning 'to place firmly' or 'to establish'. The past participle form seated functions as an adjective meaning 'fixed in place'.