Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

Comprehensive
Dictionary Suite
Help
Help
Help
 
Advanced Dictionary    
Display options
Show syllables
Show Lookup History
Double-Click Lookup
  Show Spanish support
 
Pronunciation
Wordsmyth
  Phonics
  IPA
 
Entry formats
Standard
  Classic
 
Lookup History
pertinacious

per·ti·na·cious

pertinacious

 
pronunciation:
puhr t neI shs
features:
Word Parts
part of speech: adjective
definition 1: tenacious in purpose, opinion, or the like; persevering.
If he'd been more pertinacious, I'm sure he would have won over the committee's support.
synonyms:
firm, persevering, persistent, tenacious
similar words:
assiduous, diligent, laborious, sedulous, tireless, unshakable
definition 2: stubbornly determined in action; persistent.
synonyms:
dogged, persistent
similar words:
adamant, firm, hardheaded, inflexible, insistent, mulish, resolute, stubborn, unbending, uncompromising
derivations: pertinaciously (adv.), pertinaciousness (n.)
Word Parts
The word pertinacious contains the following parts:
-acious Latin adjective-forming suffix that means full of, characterized by
Show wordsHide wordsMore about this word part:
The suffix -acious forms adjectives from Latinate nouns ending in "-acity," "-acy," or "-ce." Most common adjectives ending in -acious have a corresponding noun form ending in "-acity."