tenacious

[tuh-ney-shuhs]
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:
1600–10; tenaci(ty) + -ous

tenaciously, adverb
tenaciousness, noun
overtenacious, adjective
overtenaciously, adverb
overtenaciousness, noun
untenacious, adjective
untenaciously, adverb
untenaciousness, noun


3. opinionated, dogged. 4. clinging.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
tenacious (tɪˈneɪʃəs)
 
adj
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
 
[C16: from Latin tenāx, from tenēre to hold]
 
te'naciously
 
adv
 
te'naciousness
 
n
 
tenacity
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

tenacious
c.1600, from L. tenaci-, from tenax "holding fast" (see tenacity). Related: Tenaciously.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

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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Example sentences
Yet despite large museums' financial advantage, small, esoteric museums have
  held on tenaciously.
She has also, on more than one occasion, attacked our beagle and tenaciously
  refused to let go.
True, but the past hangs on pretty tenaciously, too.
But academia holds tenaciously to the myth of legibility.
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