LOQUACIOUS Meaning of LOQUACIOUS in English adj. 1 talkative. 2 (of birds or water) chattering, babbling. loquaciously adv. loquaciousness n. loquacity n.[ L loquax -acis f. loqui talk ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012