பொருள் : The quality of being topologically uneven.
எடுத்துக்காட்டு :
The ruggedness of the mountains.
பொருள் : The quality of being difficult to do.
எடுத்துக்காட்டு :
He assigned a series of problems of increasing hardness.
The ruggedness of his exams caused half the class to fail.
ஒத்த சொற்கள் : hardness