Pertinacious
pur-tuh-NAY-shus
/ˌpɜːtɪˈneɪʃəs/
Holding stubbornly and persistently to an opinion, belief, or course of action.
Combines intense persistence with an annoying or relentless quality.
The story behind the word. From Latin 'pertinax', where the intensive prefix 'per-' (thoroughly) was added to 'tenax' (holding fast). It described someone who held onto an idea so thoroughly that nothing could pry it loose.
Word relationships
- tenacious: 'Tenacious' is generally positive (courageous grit); 'pertinacious' can border on stubborn pestilence or unyielding insistence.
- persistent: 'Persistent' is neutral and common; 'pertinacious' is literary and emphasizes intense stubbornness.
- fickle: Fickle means changing loyalties or interests frequently.
- vacillating: Vacillating means wavering indecisively between choices.
Commonly confused with
- Tenacious: Tenacious highlights strong, admirable determination; pertinacious highlights relentless, sometimes annoying persistence.
Word family
- pertinacity (noun): the quality of being pertinacious; stubborn persistence
- pertinaciously (adverb): in a pertinacious or unyielding manner
Collocations
- pertinacious quest
- pertinacious advocacy
- pertinacious investigator
- pertinacious refusal
Idioms & expressions
- sticking like a leech
- refusing to let go
Example sentences
- "The scholar's pertinacious search through dusty archives finally brought the forgotten manuscript to light." Literary analysis
- "Her pertinacious questioning exposed several critical flaws in the proposed merger." Corporate negotiation
Memory hook
PER-TINACIOUS: Thoroughly (PER) TENACIOUS! Extra stubborn and holding on continuously. Thoroughly tenacious to the very end.
When not to use
Avoid in casual speech; it is a high-level academic and literary term.
Fun facts
- In classic 19th-century literature, detectives were frequently described as 'pertinacious' when tracking down elusive criminals.
Explore more words
persistent, persist, tenacity, relentless, perseverance, perpetual
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