yatterEtymologyImitative, perhaps from/suggested by yap/yammer + chatter. Cognate with Scots yatter, yater (“to nag, chide”), Norwegian Nynorsk jaddre (“to jabber”).yatter means Natter; prattle; mindless chatter. Lexicurio rates it Sui generis — a strength score of 87 out of 100.nounNatter; prattle; mindless chatter.verbTo natter; to prattle; to chatter mindlessly.