What is another word for keeps one trap shut?
Pronunciation: [kˈiːps wˈɒn tɹˈap ʃˈʌt] (IPA) 
There are several synonyms for the phrase "keeps one trap shut" that can be used depending on the context. One commonly used term is "keeps mum," which means to remain silent or keep a secret. "Holds one's tongue" is another similar phrase that conveys the same meaning. Additionally, "zip one's lips" signifies staying quiet and keeping information to oneself. "Clams up" is a more informal expression that denotes someone's reluctance to speak or share thoughts or feelings. Similarly, "button one's lips" suggests the act of closing one's mouth to avoid giving away any information. Regardless of the phrase used, they all imply the importance of discretion and the act of keeping quiet.
