1. 
   Pertinacity
   Per`ti·nac'i·ty noun [ Confer French pertinacité .] The quality or state of being pertinacious; obstinacy; perseverance; persistency. Macaulay. Syn. -- See Obstinacy .
   Found op http://www.encyclo.co.uk/webster/P/63
   
   
2. 
   Pertinacity
   • (n.) The quality or state of being pertinacious; obstinacy; perseverance; persistency.
   Found op http://thinkexist.com/dictionary/meaning/pertinacity/
   
   
3. 
   pertinacity
   1) Determination 2) Doggedness 3) Perseverance 4) Persistence 5) Persistency 6) Purpose 7) Tenaciousness 8) Tenacity
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/pertinacity/1
   
   

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