What is another word for tight lips?
Pronunciation: [tˈa͡ɪt lˈɪps] (IPA) 
When people say someone has "tight lips," they generally mean that person is keeping their mouth firmly closed or being tight-lipped about something important. There are several synonyms for this term, which convey a similar meaning. One such synonym is "close-mouthed," which suggests someone is unwilling to speak about a topic, or is keeping their thoughts or feelings to themselves. "Silent" or "mum" also have similar connotations and imply a person is keeping information to themselves. Other possible synonyms include "secretive," "reserved," "guarded," and "inscrutable." Essentially, these words all suggest someone who is purposefully holding back information, and the reasons behind their reticence may vary.
