болтать

1) General subject: babble, blab, blab (о чем-л.), blabber, blatter, bleat, buck, burble, cackle, chaffer, chat, chatter, chipper, clatter, confabulate, fan out, flap one's mouth, gab, gabble, gas, gossip, haver, jabber, mag, make chin music, natter, palaver, parleyvoo, peach, prate, prattle, quack, rattle, rattle along, rattle away, shake up, shoot off mouth, swing, talk, tattle, tittle-tattle, tongue, troll, twaddle, twitter, waffle, wag, wag (языком), wiggle-waggle, yackety yak, yak, yak yak, yakety yak, yap, yarn, go on, make a small talk, wag chin, wag tongue (языком), clap

2) Colloquial: blat, confab, confab (сокр. от confabulate), cosher, piffle, pill, prose, quacksalver, witter (Lingvo 9.0), sound off

3) Dialect: knap

4) American: bat the breeze, visit, woffle, chew the rag

5) Military: work the bolt

6) Rare: chin

7) British English: chin wag

8) Australian slang: earbash, yabber

9) Jargon: beat chops, beat gums, blob, chewed, chinwag, chop (one's) teeth, fan, fan the breeze, flap (one's) jaw, flap (one's) jowls, flip (one's) up, jibber-jabber, schmoos, schmoose, shoot the breeze, yack, yackety-yak, yak-yak, yakety-yak, yatata yatata, yock, yuck, yuk, bowler, throw the crap, shoot the shit, dish, flap (one's) chops (jowls; jaw; lip), gum, open (one's) yap, shoot (someone) down, shoot (the) bull, wig

10) Makarov: chipper (о детях), puddle (перемешивать), shake (взбалтывать), shake up (взбалтывать), stir (перемешивать), waggle, chew the fat, dish up, flap about, flap chops, flap jaw, flap jowls, flap mouth, flip lip

11) Taboo: shoot the crap