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Thesaurus: pertinacious

Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.

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  1. a. Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.
  2. a. Resolute; persevering; constant; steady.
  3. adj. stubbornly unyielding
  4. 1. Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar. 2. Resolute; persevering; constant; steady. Diligence is a steady, constant, and pertinacious study. South. Syn. -- Obstinate; stubborn; inflexible; unyielding; resolute; determined; firm; constant; steady. -- Per`ti*na"cious*ly, adv. -- Per`ti*na"cious*ness, n.
  5. s stubbornly unyielding