The phrase "lay one's door" is an idiom that means to make oneself available or accessible for others to visit or approach. Some antonyms for this phrase could be "shut the door," "exclude," or "withdraw." These words connote feelings of privacy, isolation, or secrecy, and indicate a desire to keep others at bay. Other antonyms could be "face the outside world," "mingle with others," or "socialize," which suggest a willingness to engage with others and participate in social activities. Using antonyms to "lay one's door" can help convey a sense of distance, detachment, or reserve, or conversely, a desire for connection, intimacy, and community.