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Synonym Chooser

How is the word pertinacious distinct from other similar adjectives?

Some common synonyms of pertinacious are dogged, mulish, obstinate, and stubborn. While all these words mean "fixed and unyielding in course or purpose," pertinacious suggests an annoying or irksome persistence.

a pertinacious salesclerk refusing to take no for an answer

When can dogged be used instead of pertinacious?

The synonyms dogged and pertinacious are sometimes interchangeable, but dogged suggests an admirable often tenacious and unwavering persistence.

pursued the story with dogged perseverance

In what contexts can mulish take the place of pertinacious?

In some situations, the words mulish and pertinacious are roughly equivalent. However, mulish implies a thoroughly unreasonable obstinacy.

a mulish determination to have his own way

When is it sensible to use obstinate instead of pertinacious?

While the synonyms obstinate and pertinacious are close in meaning, obstinate implies usually an unreasonable persistence.

an obstinate proponent of conspiracy theories

When would stubborn be a good substitute for pertinacious?

Although the words stubborn and pertinacious have much in common, stubborn implies sturdiness in resisting change which may or may not be admirable.

a person too stubborn to admit error

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Recent Examples of pertinacious But Kerry, the pertinacious diplomat and former Massachusetts senator, sees too much to do — and insisted in an interview with The Boston Globe there is too much to possibly achieve — to quit just yet. Jess Bidgood, BostonGlobe.com, 26 Feb. 2023 Barletta’s pertinacious reputation on immigration, from his time as mayor of Hazleton to his four terms in the U.S. House, is at center stage this year in his campaign to defeat Sen. Bob Casey’s bid for a third term. Chris Brennan, Philly.com, 25 June 2018
Recent Examples of Synonyms for pertinacious
Adjective
  • The 2021 Chianti Classico Riserva displayed polished tannins, vibrant red fruit, and a graceful, persistent finish.
    Jessica Dupuy, Forbes.com, 31 May 2025
  • There's a global 4B movement encouraging women to go celibate in protest against shrinking rights and persistent misogyny.
    Lydia Patrick, MSNBC Newsweek, 30 May 2025
Adjective
  • Their relationship can be difficult as AM is stubborn and likes to have her way always.
    Carolyn Rosenblatt, Forbes.com, 9 June 2025
  • Rick McConnell said that this sounds like his mom, who is stubborn.
    Bella Waters, Kansas City Star, 4 June 2025
Adjective
  • And so, what was once a lazy, crazy, charming afternoon daydream of a movie is now a frantic, insistent, often unfunny sci-fi comedy.
    Bilge Ebiri, Vulture, 21 May 2025
  • Wallen is still insistent about how those roots remain central to his music.
    Jon Caramanica, New York Times, 21 May 2025
Adjective
  • But Rawan is adamant that solving this will need more than just high-tech products.
    Alexander Puutio, Forbes.com, 9 June 2025
  • Furious, Julian is adamant that Gabby wasn’t on the boat with Finn and Toby.
    Barry Levitt, Time, 6 June 2025
Adjective
  • Armstrong is less resolute, however, when asked how much President Trump’s election to a second term affected his sense of urgency.
    Adam B. Vary, Variety, 30 May 2025
  • Xi’s government has portrayed itself as a resolute defender of the Chinese nation and mocked its opponent.
    Michael Schuman, The Atlantic, 8 May 2025
Adjective
  • Alternatively, seersucker remains a steadfast warm-weather favorite—especially for those who appreciate a touch of New England preppiness.
    Brett F. Braley-Palko, Forbes.com, 31 May 2025
  • The single combines the guitarist’s weighted influence with the música mexicana group’s steadfast ambition.
    Larisha Paul, Rolling Stone, 30 May 2025
Adjective
  • More: McConnell called Trump 'despicable' and a 'narcissist,' cried after Capitol riot, new book says Now out of GOP leadership, McConnell has emerged as the most obstinate member of a loose cohort of Republican senators willing to criticize the president’s policies and nominees.
    Riley Beggin, USA Today, 6 Jan. 2021
  • Trump has repeatedly voiced his frustration with Ukrainian President Volodymyr Zelensky, accusing him of litigating the negotiations in the press and of being obstinate for drawing a red line by declaring Ukraine would not accept a deal that recognizes Russia’s occupation of Crimea.
    Jonathan Easley, The Hill, 24 Apr. 2025

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Cite this Entry

“Pertinacious.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/pertinacious. Accessed 13 Jun. 2025.

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