stoutness
noun
[ ˈstaʊtnəs ]
• the quality of being fat or of heavy build.
• "the connection between diabetes and stoutness"
• the quality of being strong and thick.
• "they had left him unbound, trusting in the stoutness of the wooden walls that locked him in"
• bravery; determination.
• "he set about his goal with admirable stoutness"