finned

the adjective "finned" is built upon the noun "fin," which entered english from old english finn. this old english term is related to old norse finnr and middle low german vinne, all referring to the wing-like limb of a fish. the latin root finis, meaning "end" or "boundary," is a likely deeper source, conceptually linking the fin as the extremity or terminal part of the fish's body. the suffix "-ed," of old english origin, is added to nouns to create adjectives denoting possession, thus "finned" literally means "provided with fins," a straightforward morphological construction that has remained semantically transparent.

Structure: fin (wing, limb) + n + ed (adjective suffix) fin (from latin finis, meaning "end, boundary", later developing the sense of a wing-like appendage at the end of a fish); n (a connective letter from the latin root); ed (a suffix of old english origin used to form adjectives meaning "having, provided with").