narrow-eyed

the compound adjective 'narrow-eyed' is a transparent formation from two english elements. the first element, 'narrow', descends from proto-germanic 'narwaz', conveying a sense of tightness or constriction, which evolved into its modern meaning describing limited width. the second element, 'eyed', utilizes the old english noun for the organ of sight combined with the participial suffix '-ed' to indicate possession of a characteristic. when combined, the literal meaning "having narrow eyes" naturally extended to describe a suspicious or scrutinizing facial expression, as squinting or partially closing one's eyes is a common physiological response when focusing critically or distrustfully.

Structure: narrow (adjective) + eyed (adjective) - narrow: from old english 'nearu' meaning "constricted, limited, petty"; functions as an adjective modifying the nature of the 'eyes'. - eyed: from old english 'ēage' (eye) + the suffix '-ed', meaning "having or provided with (a specified kind of) eyes"; functions as an adjective-forming suffix.