What is another word for runs off mouth?
Pronunciation: [ɹˈʌnz ˈɒf mˈa͡ʊθ] (IPA) 
The phrase "runs off mouth" is indicative of someone who talks too much or says things without thinking. There are several synonyms for this phrase, including "yammering," "babbling," "chattering," "gabbing," and "rambling." Other similar terms include "gossiping," "flapping one's gums," "blabbering," and "jawing." All of these words describe someone who tends to talk excessively and perhaps too freely. To avoid being labeled as someone who "runs off mouth," it's important to be mindful of what you say and take a more thoughtful approach to communication. This can help you build better relationships and earn the respect of those around you.
