pertināx ācis, adj. with comp. and sup.
per+ tenax,
persevering, unyielding, obstinate, pertinacious, stubborn
: pertinacissimus fueris, si, etc.: virtus,
L.: concertationes in disputando: pertinacior in
repugnando, L.: ad obtinendam
iniuriam, L.: adversus
impetūs, L.: fortuna Ludum insolentem
ludere pertinax, H.