Pronunciation: [ɹˈʌnz mˈa͡ʊθ] (IPA) 
The expression "runs mouth" is used to describe someone who talks too much, usually in a boastful or irritating manner. The word "runs" is pronounced as /rʌnz/ in IPA phonetic transcription, with the vowel sound represented by the symbol "ʌ" as in "cup". The plural form of the noun "mouth" is pronounced as /maʊðz/ in IPA, with the voiced consonant "ð" as in "the". Together, "runs mouth" is pronounced as /rʌnz maʊð/ in IPA.
"Runs mouth" is an idiomatic expression that refers to a person who excessively talks or speaks in a brash or boastful manner, often without considering the consequences or the potential impact of their words. The colloquial term "runs mouth" suggests that the individual is engaging in continuous or rapid speech that may be perceived as annoying, obnoxious, or unreliable.
The phrase "runs mouth" can be used to describe someone who lacks discretion or tact, often sharing information or opinions without restraint. Such individuals tend to dominate conversations, frequently interrupting others and monopolizing the dialogue. This behavior is typically associated with a lack of self-control or an intention to impress others through their words.
Furthermore, a person who "runs mouth" often exaggerates or embellishes their stories, attempting to make themselves sound more knowledgeable, experienced, or successful. This tendency may result in a loss of credibility or a negative perception of insincerity and braggadocio. As a result, their excessive talking can lead to strained relationships, as others may perceive them as attention seekers, unreliable narrators, or even chronic liars.
In summary, the phrase "runs mouth" describes a person who talks excessively, often in a loud, boastful, or brash manner, without considering the implications of their words. Such individuals may lack discretion, interrupt others, and embellish stories, resulting in strained relationships and a diminished level of credibility.
The term "runs mouth" is an idiomatic expression in English, meaning someone who talks excessively or without restraint. However, it is important to note that "runs mouth" is not a common phrase or an established idiom in standard English. It seems to be a variation or misinterpretation of the more widely used phrase "runs off at the mouth", but it is not widely recognized or used in contemporary English language.
