The correct spelling of the phrase "wast down mouth" is actually "waste-gown mouth." The "e" in "waste" is pronounced and the "gown" is run together with "mouth." In IPA phonetic transcription, it would be /weɪst-gaʊn maʊθ/. This phrase describes someone who talks too much and often says things that should be kept private. So next time, be sure to use the correct spelling of "waste-gown mouth" to accurately convey your thoughts.