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tenacious

[tuh-ney-shuh s] /təˈneɪ ʃəs/
adjective
1.
holding fast; characterized by keeping a firm hold (often followed by of):
a tenacious grip on my arm; tenacious of old habits.
2.
highly retentive:
a tenacious memory.
3.
pertinacious, persistent, stubborn, or obstinate.
4.
adhesive or sticky; viscous or glutinous.
5.
holding together; cohesive; not easily pulled asunder; tough.
Origin of tenacious
1600-1610
First recorded in 1600-10; tenaci(ty) + -ous
Related forms
tenaciously, adverb
tenaciousness, noun
overtenacious, adjective
overtenaciously, adverb
overtenaciousness, noun
untenacious, adjective
untenaciously, adverb
untenaciousness, noun
Synonyms
3. opinionated, dogged. 4. clinging.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for tenacious
Contemporary Examples
Historical Examples
  • He knew that here was a bold and tenacious spirit, kin to that of Grant.

    The Rock of Chickamauga Joseph A. Altsheler
  • My mother's imagination was as vivacious, but not as tenacious as my own.

  • She seldom showed any anger; but when she did it was tenacious, and slow to be appeased.

  • Ganymede was of a tenacious mettle, and of this he now afforded proof.

    Bardelys the Magnificent Rafael Sabatini
  • To the man who had done him some service, of tenacious memory.

    Agesilaus Xenophon
British Dictionary definitions for tenacious

tenacious

/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
Derived Forms
tenaciously, adverb
tenaciousness, tenacity (tɪˈnæsɪtɪ) noun
Word Origin
C16: from Latin tenāx, from tenēre to hold
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
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Word Origin and History for tenacious
adj.

c.1600, from Latin tenaci-, from tenax "holding fast" (see tenacity). Related: Tenaciously; tenaciousness.

Online Etymology Dictionary, © 2010 Douglas Harper
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tenacious in Medicine

tenacious te·na·cious (tə-nā'shəs)
adj.

  1. Clinging to another object or surface; adhesive.

  2. Holding together firmly; cohesive.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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