PERTINACIOUS Synonyms: 153 Similar and Opposite Words

Q: 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

Q: 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

Q: 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

Q: 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

Q: 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

pertinacious

adjective

ˌpər-tə-ˈnā-shəs

Definition of pertinacious next

as in persistent

continuing despite difficulties, opposition, or discouragement a pertinacious little boy who was determined to catch and collect reptiles

Synonyms & Similar Words

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Antonyms & Near Antonyms

as in stubborn

sticking to an opinion, purpose, or course of action in spite of reason, arguments, or persuasion a pertinacious salesman who would simply not take "No!" for an answer

Synonyms & Similar Words

Antonyms & Near Antonyms

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

Recent Examples of Synonyms for pertinacious

Adjective

In his inital letter, Lehmkuhl agreed that there is an urgent need to clear debris and address the persistent odor of millions of pounds of rotting food at the site.

— Jasmine Mendez Follow, Los Angeles Times, 4 July 2026
Though effective medication exists, the issue is persistent in areas with a lack of easy access to testing, treatment and clean water so people don't rely on local bodies of water for drinking and bathing.

— William McCarthy, NPR, 4 July 2026

Definition of persistent

Adjective

Colombia earned its passage into the round of 16 with a 1-0 win over stubborn Ghana.

— Kevin Baxter, Los Angeles Times, 6 July 2026
Pickle Robot’s Physical AI unloaders tackle the dock door bottleneck, which is a stubborn pain point in inbound logistics, while AmbiStack handles the structured, high-volume stacking that feeds downstream operations.

— Arthur Zaczkiewicz, Footwear News, 6 July 2026

Definition of stubborn

Adjective

The loud and insistent residents of Monterey Park showed that shaming and pressuring politicians can work.

— Carlos De Loera, Los Angeles Times, 26 June 2026
What most interests me about The Emergency Playbook is how, beneath the sunny tone, there’s a calm but insistent moral outrage on display.

— Literary Hub, Literary Hub, 25 June 2026

Definition of insistent

Adjective

While waiting to go to court, Zaayer remained adamant that Shawna needed to go to prison but was also convinced that David — who worked at the nearby jail — was protecting his wife from receiving an adequate punishment, per The Guardian.

— Caroline Blair, PEOPLE, 3 July 2026
But Senate Majority Leader John Thune (R-SD) has been adamant that there are not enough votes in the Senate to pass the legislation, given the 60-vote filibuster threshold.

— Mabinty Quarshie, The Washington Examiner, 28 June 2026

Definition of adamant

Adjective

His desire to run in behind and carry the ball at speed was most impressive against Panama, something that England can use to test more resolute defensive sides, as well as those who will leave spaces in behind to attack.

— Adam Crafton, New York Times, 1 July 2026
England’s fierce attacks in the second half were thwarted by a resolute American defense and a series of saves by goalkeeper Frank Borghi.

— Tushaar Kuthiala, Encyclopedia Britannica, 22 June 2026

Definition of resolute

Adjective

To his supporters, Iran’s late Supreme Leader Ayatollah Ali Khamenei was the steadfast, fearless leader who transcended mere politics and inspired devotion.

— Xiaoqian Lin, CNN Money, 6 July 2026
Each project generated steadfast opposition from the city's neighborhoods, calling into question how the city should regulate the advanced technology centers.

— Alysa Guffey, IndyStar, 2 July 2026