What does pertinacity mean?
Pertinacity is a formal word for stubborn persistence, especially the determination to continue pursuing something despite resistance, criticism, or difficulty. It can describe admirable commitment when a person refuses to give up, but it more commonly carries a slightly critical tone, implying an unyielding or obstinate attachment to a position. The word is often used for people, organizations, arguments, and efforts: a negotiator may show pertinacity in seeking a compromise, while a campaign may continue through pertinacity despite declining support. In ordinary conversation, persistence, tenacity, or stubbornness often sound more natural, while obstinacy places greater emphasis on being unwilling to change one's mind. Etymologically, pertinacity reflects the Latin root pertinax, meaning tenacious or holding firmly, which explains its association with an unshakable hold on a course of action.
nounThe quality of being firmly determined to pursue a course of action, especially in spite of opposition or difficulty. It often implies stubborn persistence rather than flexible perseverance.
- Stubborn persistence or determined refusal to abandon an aim, course of action, or position.
"Her pertinacity in challenging the decision eventually persuaded the committee to reconsider it."
"It was the candidate's pertinacity that kept the issue alive despite repeated objections."
"The research team's pertinacity finally produced a convincing explanation."
Pertinacity comes from a Latin idea of holding on firmly, so the word literally suggests an unyielding grip on a chosen course.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does pertinacity come from?
The word comes through Old French from Latin pertinentia, a noun meaning perseverance or obstinacy, derived from pertinax, “tenacious” or “stubborn.” The Latin root combines per-, meaning thoroughly or completely, with tenax, meaning holding fast, from tenere, “to hold.” The same broad root is reflected in English words such as tenacious, tenacity, and pertinacious.
Related word forms
How pertinacity is actually used
Generally formal and sometimes disapproving. It can suggest admirable persistence, but it more often conveys stubbornness or refusal to yield.