What is another word for clamming up?
Pronunciation: [klˈamɪŋ ˈʌp] (IPA) 
Clamming up is a phrase used to describe when someone becomes uncommunicative or unresponsive, often due to anxiety, nervousness, or fear. There are several synonyms for this term, including becoming tight-lipped, bottling up, shutting down, closing up, going silent, becoming withdrawn, or taking a vow of silence. Each of these phrases highlights the same behavior, where a person closes themselves off and becomes uncommunicative. Understanding the reasons why someone clamming up can help to prevent further communication breakdowns and help that person feel supported and listened to. So, be mindful of someone who may be clamming up and reach out to them.
