pertinacious


per·ti·na·cious

adjective \ˌpər-tə-ˈnā-shəs\

Definition of PERTINACIOUS

1
a :  adhering resolutely to an opinion, purpose, or design
b :  perversely persistent
2
:  stubbornly tenacious
per·ti·na·cious·ly adverb
per·ti·na·cious·ness noun
per·ti·nac·i·ty \-ˈna-sə-tē\ noun

Examples of PERTINACIOUS

  1. <a pertinacious little boy who was determined to catch and collect reptiles>
  2. <a pertinacious salesman who would simply not take No! for an answer>

Origin of PERTINACIOUS

Latin pertinac-, pertinax, from per- thoroughly + tenac-, tenax tenacious, from tenēre
First Known Use: 1626

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