- holding tenaciously to a purpose, course of action, or opinion; resolute.
- stubborn or obstinate.
- extremely or objectionably persistent: a pertinacious salesman from whom I could not escape.
Origin of pertinacious
SynonymsSee more synonyms on Thesaurus.com
1. persevering. 2. dogged.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pertinacious
And it was the presence of that pertinacious ship-chandler which had started them.'Twixt Land & Sea
Behind these was the agent, punctual and pertinacious, who had come for the rent.The Paliser case
And he escaped from pertinacious Mr. Dawson with some alacrity.Half a Hero
Again they laughed at the child's pertinacious fancy for a night-ramble.Short Story Writing
Charles Raymond Barrett
"They are not the only pertinacious ones," the priest replied.The Art of Disappearing
John Talbot Smith
- doggedly resolute in purpose or belief; unyielding
- stubbornly persistent
C17: from Latin pertināx, from per- (intensive) + tenāx clinging, from tenēre to hold
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for pertinacious
Online Etymology Dictionary, © 2010 Douglas Harper