1 adjectives to describe backdoors

"He then led me about all the by-places in the house, and shew'd me fifty little backdoors, dark closets, and narrow passages in alterations and contrivances of which kind he had busied his head most part of the vacation; for he was scarce ever without some notable joyner or a bricklayer extraordinary, in pay, for twenty years.

1 adjectives to describe  backdoors