Other forms: reticences
Reticence is a kind of reserve, wanting to avoid communication and not wanting to offer any more information than is necessary.
Reticence is a noun originating from the Latin word reticent, meaning “remaining silent.” Someone charged with a crime might be instructed by their lawyer to show reticence when being questioned by police. As a child, reticence saved you from getting in trouble when mom asked who ate all the cookies from the jar.