Webster's English Dictionary

Enter the word to look up:

pertinacious

Cross references:
  1. obstinate             
 
per.ti.na.cious \.p*rt-*n-'a--sh*s\ aj [L pertinac-, pertinax, fr. per- 
   thoroughly + tenac-, (Xtenax tenacious, fr. tene-re 1a: adhering resolutely 
   to an opinion, purpose, or design  1b: perversely persistent : OBSTINATE  
   2: stubbornly unyielding or tenacious : PERSISTENT  - per.ti.na.cious.ly av