Multiloquous is an adjective that is not often used in everyday language. It means someone who is talkative or prone to speaking at length. If you are looking for synonyms for this word, you could try using verbose, garrulous, loquacious, or chatty. These words all convey the same idea of someone who talks a lot, perhaps too much. Other possible synonyms for multiloquous include yakking, gabby, blabbermouth, and chatterbox. No matter what word you choose to use, they all describe someone who has a lot to say and enjoys expressing themselves through speech.