Natter \Nat"ter\, v. i. [Cf. Icel. knetta to grumble.]

1. To find fault; to be peevish. [Prov. Eng. or Scot.]

[1913 Webster]

2. To talk constantly; to chatter incessantly to prattle; as, nattering like a chatterbox. [PJC]

Source: The Collaborative International Dictionary of English v.0.48
 

59 Moby Thesaurus words for "natter": babble, babblement, bavardage, bibble-babble, blab, blabber, blah-blah, blather, blether, blethers, cackle, caquet, caqueterie, chat, chatter, chitter-chatter, clack, clatter, dither, gab, gabble, gas, gibber, gibble-gabble, go on, gossip, guff, gush, haver, hot air, idle talk, jabber, jaw, mere talk, nonsense talk, palaver, patter, pour forth, prate, prating, prattle, prittle-prattle, ramble on, rattle, rattle on, reel off, run on, spout, spout off, talk away, talk nonsense, talk on, talkee-talkee, tittle-tattle, twaddle, twattle, waffle, yak, yakkety-yak

Source: Moby Thesaurus II by Grady Ward, 1.0
 

natter v : talk socially without exchanging too much information; "the men were sitting in the cafe and shooting the breeze" [syn: chew the fat, shoot the breeze, chat, confabulate, confab, chitchat, chatter, chaffer, gossip, jaw, claver, visit]

Source: WordNet (r) 2.0
 

Natter \Nat"ter\, v. i. [Cf. Icel. knetta to grumble.]

To find fault; to be peevish. [Prov. Eng. or Scot.]

Source: Webster's Revised Unabridged Dictionary (1913)