smatter
v.The verb is derived from Middle English smateren, smatteren, smater, smatere (“to make dirty, defile; to talk idly, chatter; to speak foolishly”); further etymology uncertain, compare the following: * Middle English smotten (“to corrupt, debase, defile”) (whence English smot (obsolete)), related to Late Middle High German smotzen, a variant of smutzen (whence modern German schmutzen (“to become dirty or soiled; to make dirty, soil”)), from smuz (“dirt”). * Danish smadre (“to smash”), German schmettern (“to smash; to resound”) (from Middle High German smetern (“to chatter; to rattle; (dialectal) to make a smacking sound”)); Norwegian Bokmål smadre (“to smash”), Swedish smattra (“to make short, sharp, quickly repeating noises, patter, rattle”), possibly originally onomatopoeic. However, the Oxford English Dictionary says “real connection is very doubtful”. The noun is derived from the verb.