What is another word for secret passage?
Pronunciation: [sˈiːkɹət pˈasɪd͡ʒ] (IPA) 
A secret passage is defined as a hidden or disguised route or pathway designed to allow secure and concealed access to a particular destination or location. Some synonyms that can be used instead of secret passage include hidden corridor, covert pathway, clandestine tunnel, obscure thoroughfare, concealed ingress, discreet entrance, covert entrance and concealed passage. These synonyms are useful when writing mystery and adventure novels, describing secret escape routes for spies or when discussing the hidden locations and passageways of ancient castles or forts. Each synonym could evoke a slightly different mood or element depending on the context and setting in which it is used, but they all serve to convey a sense of intrigue, suspense, and secrecy.
