run off at the mouth: Idiom Meaning and Origin

"run off at the mouth" is a commonly used expression in the English language. It means to talk excessively or without restraint. This idiom can be traced back to the early 20th century and has since become widely recognized.

One possible origin of the phrase is related to the physical act of running. When someone "runs off at the mouth," they are perceived to be speaking uncontrollably and without purpose. The term "off at the mouth" suggests that the words are flowing out of the speaker's mouth in an uncontrolled manner.

Another theory behind the origin of this idiom is associated with horses and their bridles. In the past, horses would sometimes "run off at the mouth" due to discomfort caused by ill-fitting bridles. This analogy is drawn between the horse's inability to control the reins and a person's inability to control their words.

Regardless of its precise origins, "run off at the mouth" has become a commonplace expression in American English. It is frequently used in both formal and informal contexts to convey the idea of speaking excessively, often to the point of becoming irritating or tiresome for others. The phrase is typically used in a negative sense, highlighting the lack of control or thoughtfulness exhibited by the person in question.

Now, let's explore some related idioms that are similar to "run off at the mouth."

The first related idiom is "run at the mouth." This phrase is similar in meaning to "run off at the mouth" and also implies excessive talking without restraint. However, "run at the mouth" focuses more on the act of speaking itself, rather than the lack of control or thoughtfulness.

Another related idiom is "run off." This phrase can be used to describe someone who leaves quickly or without permission. While it may seem unrelated to "run off at the mouth" at first, there is a connection. Both idioms involve the idea of something happening quickly or uncontrollably. In the case of "run off at the mouth," the words are flowing out without control. In the case of "run off," someone is leaving abruptly or without permission.

The final related idiom is "run off with." This phrase typically refers to someone taking something or someone away without permission or without considering the consequences. It may seem unrelated to "run off at the mouth," but both idioms involve a lack of restraint or consideration for others.

"run off at the mouth" is a commonly used idiom that means to talk excessively or without restraint. It has its roots in early 20th-century English and has since become deeply ingrained in the language. The related idioms "run at the mouth," "run off," and "run off with" all share in the theme of lack of restraint or consideration for others. These idioms are used to describe various actions where someone acts impulsively or without control.