the quality of being pertinacious; persistence.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use pertinacity in a sentence
Marlborough had formerly made himself conspicuous by the keenness and pertinacity with which he had attacked the Dutch.The History of England from the Accession of James II. | Thomas Babington Macaulay
And he kept it up all through the long vacation with a pertinacity I should never have given him credit for.The Romance of His Life | Mary Cholmondeley
The former still adhered, with fixed pertinacity of purpose, to the matrimonial arrangement which he had made with his son.The Kellys and the O'Kellys | Anthony Trollope
She, it may be remembered, sought for the precious remains with true pertinacity till she found them.The Mysteries of All Nations | James Grant
Their courage and pertinacity are unconquerable, and are often sublimed into the most inconceivable rage and fury.The Book of Curiosities | I. Platts