One of the mysteries of the English language finally explained.
The quality or state of being pervicacious; obstinacy; stubbornness; wilfulness.
Early 17th century; earliest use found in Robert Parsons (1546–1610), Jesuit. From post-classical Latin pervicacitas obstinacy from classical Latin pervicāc-, pervicāx + -itās. Compare classical Latin pervicācia.
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