tenacious

adjective

te·​na·​cious tə-ˈnā-shəs 

1

a

: not easily pulled apart : cohesive

a tenacious metal

b

: tending to adhere or cling especially to another substance

tenacious burs

2

a

: persistent in maintaining, adhering to, or seeking something valued or desired

a tenacious advocate of civil rights

tenacious negotiators

b

: retentive

a tenacious memory

tenaciously adverb

tenaciousness noun

Did you know?

Tenacious Has Latin Roots

For the more than 400 years that tenacious has been a part of the English language, it has adhered closely to its Latin antecedent: tenax, an adjective meaning "tending to hold fast." Almost from the first, tenacious could suggest either literal adhesion or figurative stick-to-itiveness. Sandburs are tenacious, and so are athletes who don't let defeat get them down. We use tenacious of a good memory, too—one that has a better than average capacity to hold information. But you can also have too much of a good thing. The addition in Latin of the prefix per- ("thoroughly") to tenax led to the English word pertinacious, meaning "perversely persistent." You might use pertinacious for the likes of rumors and telemarketers, for example.

Synonyms

• dogged
• insistent
• patient
• persevering
• persistent
• pertinacious

Choose the Right Synonym for tenacious

strong, stout, sturdy, stalwart, tough, tenacious mean showing power to resist or to endure.

strong may imply power derived from muscular vigor, large size, structural soundness, intellectual or spiritual resources.

strong arms

the defense has a strong case

stout suggests an ability to endure stress, pain, or hard use without giving way.

stout hiking boots

sturdy implies strength derived from vigorous growth, determination of spirit, solidity of construction.

a sturdy table

people of sturdy independence

stalwart suggests an unshakable dependability.

stalwart environmentalists

tough implies great firmness and resiliency.

a tough political opponent

tenacious suggests strength in seizing, retaining, clinging to, or holding together.

tenacious farmers clinging to an age-old way of life

Examples of tenacious in a Sentence

But raw capitalism has also proved tenacious, evolving its own means of endlessly restimulating consumption … —Nicholas Fraser, Harper's, November 2003

This "Southern Operation" would seal off China from outside help, thus underwriting victory in Japan's frustrating four-year war against Chiang Kai-shek's feckless but tenacious Chinese army. —David M. Kennedy, Atlantic, March 1999

We have been nominally democratic for so long that we presume it is our natural condition rather than the product of persistent effort and tenacious responsibility. —Benjamin R. Barber, Harper's, November 1993

Some people claim that by election day this year François Mitterrand had very little power besides the power of his own tenacious, authoritative, and austere persona. —Jane Kramer, New Yorker, 30 May 1988

The company has a tenacious hold on the market.

a tenacious trainer, she adheres to her grueling swimming schedule no matter what

Recent Examples on the Web

There are so many ways, big and small, so always persevere and stay tenacious. —Scott Roxborough, The Hollywood Reporter, 21 Oct. 2024

Big John Routledge Big John’s emotional connection to his son and relentless pursuit of treasure reflects Cancer’s tenacious and protective nature. —Valerie Mesa, People.com, 16 Oct. 2024

Minnesota just edged New York on its home floor in Brooklyn in Game 1 of these best-of-5 WNBA Finals despite a significant rest and travel disadvantage, rallying back on multiple occasions on the strength of its tenacious defense. —Jace Frederick, Twin Cities, 12 Oct. 2024

Luckily for Mountain High, the resort’s tenacious snow cannon operators jumped into action and began spraying trees and buildings with water. —Jake Stern, Outside Online, 11 Sep. 2024

Word History

Etymology

Latin tenāc-, tenāx "holding fast, clinging, persistent" (from tenēre "to hold, occupy, possess" + -āc-, deverbal suffix denoting habitual or successful performance) + -ious — more at tenant entry 1, audacious

First Known Use

1607, in the meaning defined at sense 1a

Kids Definition

tenacious

adjective

te·​na·​cious tə-ˈnā-shəs 

1

a

: not easily pulled apart

b

: tending to stick

2

a

: holding fast or tending to hold fast : persistent

people tenacious of their opinions

old ideas are tenacious

b

: retentive

a tenacious memory

tenaciously adverb

tenaciousness noun

Medical Definition

tenacious

adjective

te·​na·​cious tə-ˈnā-shəs 

: tending to adhere or cling especially to another substance : viscous

coughed up 150 cc. of thick tenacious sputum

—The Journal of the American Medical Association