adjective

excessively talkative, especially on trivial matters.

a garrulous cab driver

talkative,loquacious,voluble,verbose,long-winded,chatty,chattery,chattering,gossipy,gossiping,babbling,blathering,prattling,prating,jabbering,gushing,effusive,expansive,forthcoming,conversational,communicative,mouthy,gabby,gassy,windy,talky,yacking,big-mouthed,with the gift of the gab,wittering,gobby,multiloquent,multiloquous,wordy,prolix,lengthy,prolonged,rambling,wandering,maundering,meandering,digressive,diffuse,discursive,periphrastic