taqiyah

or ta·qi·ya

[ tuh-kee-yuh ]
/ təˈki yə /

noun (in Shiʿite Islam)

the practice of denying one's religion, permissible when one is faced with persecution, especially by Sunnites: regarded as a means of protecting the religion.

Origin of taqiyah

From the Arabic word taqiyyah literally, caution, prudence