The term 'v-necked' is a modern compound adjective formed within English. It combines the alphabetic symbol 'V', used descriptively for its angular, tapering shape, with the noun 'neck', referring to the neckline of a garment. The adjectival suffix '-ed' is appended to indicate possession of that characteristic. This descriptive construction follows a clear and logical pattern in English, where a letter's shape is used as a prefix to define a specific style or form, creating an immediately recognizable visual descriptor for fashion and clothing design.

Structure: V (letter shape) + neck (body part) + ed (adjective suffix) - V: The 22nd letter of the modern English alphabet, used here as a symbol for its characteristic shape. (Latin origin, from the letter 'V'). - neck: The part of the body connecting the head to the shoulders, here referring to the part of a garment that fits around it. (Old English 'hnecca'). - ed: A suffix forming adjectives from nouns, meaning 'having' or 'characterized by'. (Old English '-ed', '-od', '-ad').