"Running on at the mouth" is an idiomatic expression that means to speak excessively or without restraint. In IPA phonetic transcription, it can be spelled as /ˈrʌnɪŋ ɒn æt ðə maʊθ/. The stress is on the first syllable of "running", and the "o" in "on" is pronounced as a short "o" sound. The "th" sound in "mouth" is represented by the symbol ðʌ. The phrase may also be spelled as "running off at the mouth" or simply "running one's mouth".
The expression "running on at the mouth" is an idiom that aims to describe someone who talks excessively or endlessly, often in a rambling, incoherent, or nonsensical manner. This phrase typically refers to a person who engages in non-stop talking without any regard for others' interest or the relevance of their words.
When someone is said to be "running on at the mouth," they tend to dominate conversations by frequently interjecting, expressing their opinions without being prompted, or providing unnecessary and exhaustive details. The image created by this idiom is that the person's words are flowing out rapidly and continuously, much like an uncontrollable stream flowing from the mouth.
This expression is derived from the literal behavior of a person whose words are akin to a continuous stream that seems impossible to shut off or control. It conveys the idea of a never-ending verbal outpouring, indicating a lack of self-awareness or consideration for their audience's engagement or time.
Using this idiom highlights the speaker's inability to gauge when it is appropriate to pause or simplify their discourse, leading to feelings of frustration or annoyance in those who are forced to listen. The phrase "running on at the mouth" is commonly used to emphasize the tiresome, lengthy, and often tedious nature of someone's incessant talking.