garrulous

the word garrulous originates from the latin verb garrire, meaning to chatter or prattle, which is likely of onomatopoeic origin, imitating the sound of rapid, trivial talk. this root gave rise to the latin adjective garrulus, meaning talkative. the word entered english in the early 17th century, retaining the core sense of being excessively or pointlessly talkative. the suffix -ous, meaning "full of," directly attaches to the latin root, forming an adjective that literally describes someone as "full of chattering."

Structure: garrul (chattering) + ous (adjective suffix) garrul (from latin garrulus, meaning talkative, chattering, from the verb garrire, to chatter); ous (a suffix forming adjectives, from latin -osus, meaning full of, prone to).