Akademik

sturdiness
noun
1. the state of being vigorous and robust
Derivationally related forms: ↑sturdy
Hypernyms: ↑good health, ↑healthiness
2. the property of something that is strongly built
Derivationally related forms: ↑sturdy
Hypernyms: ↑strength
3. resoluteness evidenced by strength of character
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sturdiness of moral principle

Derivationally related forms: ↑sturdy
Hypernyms: ↑resoluteness, ↑firmness, ↑firmness of purpose, ↑resolve, ↑resolution

Useful english dictionary. 2012.