What is another word for zipped lips?
Pronunciation: [zˈɪpt lˈɪps] (IPA) 
The expression "zipped lips" is often used to describe someone who is being silent or keeping a secret. There are many synonyms for this phrase that can be used in different contexts. For instance, in the corporate world, "confidentiality" may be used to describe the importance of not sharing sensitive information. In more casual settings, "keeping mum" or "buttoning one's lips" might be more appropriate. Other synonyms include "sealing one's mouth shut," "clamping down," and "tight-lipped." Regardless of the situation, these expressions all convey the idea of keeping quiet and not revealing what one knows.
