Pronunciation: [wˈe͡ɪst bɹˈɛθ] (IPA) 
The term "waste breath" is spelled as /weɪst brɛθ/. The word "waste" is pronounced as /weɪst/ with the "a" sound following the "w" pronounced in a long "e" sound. "Breath" is pronounced as /brɛθ/ and has the "ea" sound represented by "e" in "breath." This phrase is often used to describe someone who is speaking without making much sense or someone who is unnecessarily wasting their time or energy by talking.
The phrase "waste breath" refers to the act of expending energy, effort, or time in vain or on futile pursuits. It suggests an action or conversation that serves no purpose or achieves no desired outcome. The term "waste" implies that the breath, a representation of one's words or speech, is being squandered or used pointlessly.
When someone says that a particular activity or discussion is a waste of breath, they indicate their belief that it is unproductive or has no likelihood of leading to any positive results. It implies that the words spoken are unnecessary, ineffective, or superfluous in the context of the situation.
The phrase is often used to express frustration or disappointment when one feels that their efforts to communicate or persuade are being fruitless or ignored. It conveys the idea that investing time and energy into an action or argument is futile, as it will not bring about the desired outcome.
In summary, "waste breath" refers to the act of expending one's verbal efforts on a pointless or unproductive activity or conversation, conveying the sense that it will not lead to any valuable or desired result.
