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Synonyms

tenacious

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

adjective

  1. 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, tɪˈnæsɪtɪ /

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

  • overtenacious adjective
  • overtenaciousness noun
  • tenaciously adverb
  • tenaciousness noun
  • untenacious adjective
  • untenaciousness noun

Etymology

Origin of tenacious

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

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.

During a phone call with her son Joe Bennett, from Folkestone in Kent, Foreman said the prisoners she was with were "so resilient, so tenacious".

From BBC • Mar. 26, 2026

But the past century has shown that even the world’s largest and most modern militaries can be humbled when attacking tenacious adversaries willing to endure more pain to defend their territory despite overwhelming odds.

From The Wall Street Journal • Mar. 15, 2026

OJ scored 19 and EJ added 17 as the Dolphins used tenacious defense, a three-point barrage and a relentless transition attack to overwhelm Cleveland, 75-56, at L.A.

From Los Angeles Times • Feb. 28, 2026

Reportedly on the verge of signing Bournemouth's Ghana forward Antoine Semenyo, Guardiola could do with reinforcements in attack after his team were frustrated by Sunderland's tenacious performance.

From Barron's • Jan. 1, 2026

In their great, tenacious drive to succeed, perhaps Patrick saw the futility of his own struggle.

From "Me Talk Pretty One Day" by David Sedaris