talkativeShe's very happy, talkative, and outgoing.
loquaciousformalOnce a loquacious politician, he now makes rarely grants interviews and reads speeches from texts.
chattyinformalThe advisor was friendly and chatty.
garrulousHer normally garrulous mother had little to say on the subject.
long-windedHe can be a long-winded bore.
verboseformaldisapprovingIn his verbose manner, he relates the disasters that are always happening to him.
prolixformaldisapprovingThe normally prolix Mr Brown decided to keep it brief.