floppy

The word 'floppy' is a relatively modern English formation, originating in the early 19th century. It derives from the verb 'flop,' an imitative or onomatopoeic word from the 17th century that mimics the sound of something soft and heavy falling loosely. The addition of the productive adjectival suffix '-y,' of Old English origin, creates the meaning "characterized by flopping" or "tending to flop." This literal sense of being soft and limp was later applied metaphorically in computing during the 1970s to describe the early, flexible magnetic storage disks, which contrasted with rigid 'hard' disks.

Structure: flop (to move or hang loosely) + y (adjective-forming suffix) flop (imitative origin, English, meaning to move or fall loosely); y (Old English, adjective-forming suffix meaning "characterized by" or "full of").