The Collaborative International Dictionary
Pervicaciousness
Pervicacious \Per`vi*ca"cious\, a. [L. pervicax, -acis.] Obstinate; willful; refractory. [Obs.] -- Per`vi*ca"cious*ly, adv. -- Per`vi*ca"cious*ness, n.
Wiktionary
pervicaciousness
n. The quality of being pervicacious.