Akademik

unyieldingness
noun
resoluteness by virtue of being unyielding and inflexible
Syn: ↑adamance, ↑obduracy
Derivationally related forms: ↑unyielding, ↑adamant (for: ↑adamance)
Hypernyms: ↑resoluteness, ↑firmness, ↑firmness of purpose, ↑resolve, ↑resolution

Useful english dictionary. 2012.