Definition of Stoutness

Babylon English Dictionary
portliness, fatness; sturdiness; resoluteness, firmness
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Stoutness Definition from Language, Idioms & Slang Dictionaries & Glossaries
Webster's Revised Unabridged Dictionary (1913)
(n.)
The state or quality of being stout.
  
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
JM Welsh <=> English Dictionary
Pybyrwch = n. stoutness
WordNet 2.0

Noun
1. the property of being strong and resolute
(synonym) stalwartness
(hypernym) strength
2. the property of excessive fatness
(synonym) corpulence, overweight, adiposis
(hypernym) fleshiness, obesity