the word 'speeding' is a transparent modern english formation, combining the native english root 'speed' with the common gerund suffix '-ing'. the root 'speed' itself has an interesting semantic journey from old english 'spēd', which originally denoted prosperity, success, or power—a concept linked to the favorable progression of events. this sense of favorable advancement gradually narrowed and shifted to emphasize the rapidity with which such progress occurs, eventually settling on its core modern meaning of swift motion. the addition of '-ing' nominalizes the action, creating a word that specifically denotes the act or instance of moving fast, which in legal contexts became specialized to refer to the offense of exceeding speed limits.

Structure: speed (fast movement) + ing (noun suffix) speed (from old english 'spēd', meaning success, prosperity, rapid movement; functions as the core root). ing (from old english '-ung', '-ing', a suffix forming verbal nouns; functions as a nominalizer).