gabby

from WordNet (r) 3.0 (2006)

gabby
    adj 1: full of trivial conversation; "kept from her housework by
           gabby neighbors" [syn: {chatty}, {gabby}, {garrulous},
           {loquacious}, {talkative}, {talky}]

from Moby Thesaurus II by Grady Ward, 1.0

31 Moby Thesaurus words for "gabby":
      all jaw, candid, chatty, communicative, conversational, effusive,
      expansive, flip, fluent, frank, garrulous, gassy, glib, gossipy,
      gregarious, gushy, long-winded, loose-tongued, loquacious,
      multiloquent, multiloquious, newsy, overtalkative, prolix, smooth,
      sociable, talkative, talky, verbose, voluble, windy