the talkative person in the seat next to mineSyn:chatty, loquacious, garrulous, voluble, conversational, communicative; gossipy, babbling, blathering; long-winded, wordy, verbose, prolix; informal gabby, mouthy, motormouthed, talkyAnt:taciturn••talkative, garrulous, glib, loquacious, volubleSomeone who likes to talk frequently or at length might be described as talkative (He was the most talkative person I'd ever met). This word implies a readiness to engage in talk, while loquacious implies an inclination to talk incessantly or to keep up a constant flow of chatter (a loquacious woman who never seemed to tire of hearing her own voice). Glib and voluble pertain to the ease with which someone is able to converse or speak, although voluble may be used in either an approving or a critical sense (a voluble speaker who was in great demand; a voluble neighbor who could not keep a secret). Glib is almost always negative, referring to a superficial or slick way of speaking (the glib manner of a used-car salesperson). Garrulous also has negative overtones, implying a tedious or rambling talkativeness, usually about trivial things (a garrulous old man who bored everyone with his stories about "the old days").
Thesaurus of popular words. 2014.