The phrase "close lipped" is used to describe someone who is unwilling or reluctant to speak openly or divulge secrets. Antonyms, on the other hand, are words that have opposite meanings. Therefore, antonyms for "close lipped" would include terms such as talkative, garrulous, loquacious, and communicative. These descriptors indicate individuals who are open and expressive in their communication with others. Unlike their "close lipped" counterparts, such people have no hesitation in sharing their thoughts, feelings, and opinions. Hence, it's essential to be mindful of the language we use to describe others, as it shapes our perception of them and influences our relationship with them.