noun.
The state of being, or degree to which something is rugged.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the quality of being difficult to do
noun.
the property of being big and strong
noun.
the quality of being topologically uneven
Word Usage
"This anchorage is a wonderful place; the water is extremely deep, and the rocks which bound the coast exceed in ruggedness and boldness of outline any that I ever saw before."