Holding or adhering to any opinion, purpose, or design, with obstinacy; perversely persistent; obstinate; as, pertinacious plotters; a pertinacious beggar.
source: Webster 1913
adjective satellite
stubbornly unyielding
Dogged persistence. Dour determination. The most vocal and pertinacious of all the critics. A mind not gifted to discover truth but tenacious to hold it. Men tenacious of opinion.
