unwilling to tell people about things synonym reserved, uncommunicative She was shy and reticent. reticent about something He was extremely reticent about his personal life.
NAmE//ˈrɛt̮əsns//
noun [uncountable] (formal) That night she had overcome her natural reticence and talked about their married life.See reticent in the Oxford Advanced Learner's DictionaryCheck pronunciation: reticent