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Tenacious shares a Latin root with maintain, tenure, and entertain. What does the root mean?

tenacious

American  
[tuh-nay-shuhs] / təˈneɪ ʃəs /

adjective

  1. An image of the word tenacious as defined by holding fast; characterized by keeping a firm hold (often followed byof ).

    holding fast; characterized by keeping a firm hold (often followed byof ).

    a tenacious grip on my arm; tenacious of old habits.

  2. highly retentive.

    a tenacious memory.

  3. persistent, stubborn, or obstinate.

    Synonyms:
    obstinate, persistent, pertinacious, dogged
  4. adhesive or sticky; viscous or glutinous.

    Synonyms:
    clingy
  5. holding together; cohesive; not easily pulled asunder; tough.


tenacious British  
/ tɪˈneɪʃəs /

adjective

  1. holding or grasping firmly; forceful

    a tenacious grip

  2. retentive

    a tenacious memory

  3. stubborn or persistent

    a tenacious character

  4. holding together firmly; tough or cohesive

    tenacious cement

  5. tending to stick or adhere

    tenacious mud

"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

Other Word Forms

Etymology

Origin of tenacious

First recorded in 1600–10; tenaci(ty) + -ous

Explanation

Use tenacious to mean "not easily letting go or giving up," like a clingy child who has a tenacious grip on his mother's hand. A strong grip or an unyielding advocate might both be described as tenacious, a word whose synonyms include resolute, firm, and persistent. The word comes from the Latin root tenax, which means "holding fast." The basketball commentator Marv Albert, impressed by a defender's skill, once uttered the sound bite, "That's some tenacious D!" ("D" is short for "defense.") The musicians Jack Black and Kyle Gass borrowed the phrase for the name of their comedy-rock band, Tenacious D.

Keep Reading on Vocabulary.com

Vocabulary lists containing tenacious

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

Sandro Tonali, the £100m midfielder from Newcastle, was overshadowed by Villa's tenacious skipper McGinn - a £2.75m buy from Hibs eight years ago.

From BBC ● Sep. 19, 2026

However, Kevin’s tenacious new client Wile E. Coyote refuses to settle.

From Los Angeles Times ● Aug. 26, 2026

If the future of filmmaking really is in the hands of those who can best define this dreary period of life, “It Ends” meets that challenge with an optimistic, tenacious flair movies have been missing.

From Salon ● Aug. 24, 2026

Kio, whom director Favreau and company begin following when he’s eight weeks old, is a tenacious fellow and there’s never any question that life on the savanna is harsh, severe and can be very brief.

From The Wall Street Journal ● Aug. 18, 2026

Wyatt had hired Terryl and had watched her become a tenacious victim’s advocate.

From "A Deadly Wandering: A Mystery, a Landmark Investigation, and the Astonishing Science of Attention in the Digital Age" by Matt Richtel

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