adjective

willing, eager, or able to talk or impart information.

Lew was a very communicative chap

forthcoming,expansive,informative,expressive,unreserved,uninhibited,vocal,outgoing,frank,open,candid,talkative,conversational,chatty,gossipy,loquacious,garrulous,voluble,verbose,effusive,gushing,mouthy,gabby,windy,gassy,talky,multiloquent,multiloquous