“Her impressive fastness allowed her to finish the race in record time.”

“The fastness stood tall and impenetrable, serving as a formidable defensive structure against any potential threats.”

“The fastness of his dedication to the cause was unparalleled, as he tirelessly worked towards its success.”

“We returned to our remote northern fastnesses to find that the Apparitional Gamekeeper had been busy.”

“Perhaps these icons of the old American West also started life half a world away in the fastnesses of Tibet.”

“And when the last survivors fled to their brick-and-mortar fastnesses, our work was only half done.”