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Definition of tenacious:

  1. Apt to adhere to another substance; glutinous; viscous; sticking; adhesive.
  2. Apt to retain; retentive; as, a tenacious memory.
  3. Having parts apt to adhere to each other; cohesive; tough; as, steel is a tenacious metal; tar is more tenacious than oil.
  4. Holding fast, or inclined to hold fast; inclined to retain what is in possession; as, men tenacious of their just rights.
  5. Holding stoutly to one's opinion or purpose; obstinate; stubborn.
  6. Niggardly; closefisted; miserly.


sullen, glowering, long, prospicient, ambitious, stubborn, sedulous, resist, clingy, final, retentive, dark, viscous, glum, glutinous, unrelenting, haunting, logical, recollective, unchanging, gluey, sticky, lax, viscid, dogged, perverse, adhesive, inseparable, forbidding, foresightful, adherent, driven, farseeing, grim, lucid, unvarying, clinging, bulldog, stiff-necked, irreversible, foresighted, whatever happens, pigheaded, gummy, morose, coherent, pertinacious, sour, dour, secure, for good, unyielding, fast, saturnine, farsighted, free, longsighted, loose, moody, motivated, competitive, waxy, purposeful, tacky, resisting, invariable, consistent, tight, tighten, willful, ordered.

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