different between pertinacious vs rigorous

English

Etymology

From pertinace +? -ious, from Old French pertinace, from Latin pertinax, from per- (“very”) + tenax (“tenacious”).

Pronunciation

• (UK) IPA^(key): /?p??t??ne???s/
• (US) enPR: pûr-tn-?'sh?s, IPA^(key): /p?tn??e???s/
• Rhymes: -e???s

Adjective

pertinacious (comparative more pertinacious, superlative most pertinacious)

1. Holding tenaciously to an opinion or purpose.
   • 1884, Henry James, "The Path of Duty" in The English Illustrated Magazine 2(15): 240–256.

     He would really have to make up his mind to care for his wife or not to care for her. What would Lady Vandeleur say to one alternative, and what would little Joscelind say to the other? That is what it was to have a pertinacious father and to be an accommodating son.
2. Stubbornly resolute or tenacious.

Synonyms

• See also Thesaurus:obstinate

Related terms

• pertinaciousness
• pertinacity

Translations

English

Alternative forms

• rigourous (non?standard)

Etymology

From Old French, from Late Latin rigorosus.

Pronunciation

• IPA^(key): /???????s/
• Rhymes: -?????s

Adjective

rigorous (comparative more rigorous, superlative most rigorous)

1. Showing, causing, or favoring rigour; scrupulously accurate or strict; thorough.

   a rigorous officer of justice

   a rigorous execution of law

   a rigorous inspection
2. Severe; intense.

   a rigorous winter.

Synonyms

• (showing, causing or favoring rigor): painstaking, scrupulous; see also Thesaurus:meticulous
• (severe; intense): harsh, strict; see also Thesaurus:stern

Antonyms

• (severe; intense): arbitrary, capricious, whimsical

Derived terms

• nonrigorous
• overrigorous
• rigorously
• rigorousness
• unrigorous

Related terms

• rigid
• rigour

Translations

Further reading

• rigorous at OneLook Dictionary Search
• rigorous in The Century Dictionary, New York, N.Y.: The Century Co., 1911.