big mouth

== English == === Alternative forms === bigmouth (person only) === Pronunciation === === Noun === big mouth (plural big mouths) (idiomatic, often derogatory) The mouth of someone who talks too much, especially by making exaggerated claims or by inappropriately revealing information. (idiomatic, often derogatory) A person who talks too much, especially by making exaggerated claims or by inappropriately revealing information. ==== Usage notes ==== Numerous common phrases involve one's "big mouth" or "mouth" being shut or open. ==== Derived terms ==== open one's big mouth ==== Translations ====