rattle:  Rattle probably existed in Old English, but in the absence of any direct evidence, it is usually suggested that the word was borrowed from Middle Low German rattelen, a relative of German rasseln ‘rattle’. Whatever its ultimate source, it no doubt originally imitated the sound of rattling.
c. 1300 (intransitive), "To make a quick sharp noise with frequent repetitions and collisions of bodies not very sonorous: when bodies are sonorous, it is called jingling" [Johnson]. Perhaps in Old English but not recorded; if not, from Middle Dutch ratelen, probably of imitative origin (compare German rasseln "to rattle," Greek kradao "I rattle"). Sense of "utter smartly and rapidly" is late 14c. Meaning "to go along loosely and noisily" is from 1550s. Transitive sense is late 14c.; figurative sense of "fluster" is first recorded 1869. Related: Rattled; rattling.