pertinacious
41Stiff — Stiff, a. [Compar. {Stiffer}; superl. {Stiffest}.] [OE. stif, AS. st[=i]f; akin to D. stijf, G. steif, Dan. stiv, Sw. styf, Icel. st[=i]fr, Lith. stipti to be stiff; cf. L. stipes a post, trunk of a tree, stipare to press, compress. Cf. {Costive} …
42Stiff neck — Stiff Stiff, a. [Compar. {Stiffer}; superl. {Stiffest}.] [OE. stif, AS. st[=i]f; akin to D. stijf, G. steif, Dan. stiv, Sw. styf, Icel. st[=i]fr, Lith. stipti to be stiff; cf. L. stipes a post, trunk of a tree, stipare to press, compress. Cf.… …
43Stiffer — Stiff Stiff, a. [Compar. {Stiffer}; superl. {Stiffest}.] [OE. stif, AS. st[=i]f; akin to D. stijf, G. steif, Dan. stiv, Sw. styf, Icel. st[=i]fr, Lith. stipti to be stiff; cf. L. stipes a post, trunk of a tree, stipare to press, compress. Cf.… …
44Stiffest — Stiff Stiff, a. [Compar. {Stiffer}; superl. {Stiffest}.] [OE. stif, AS. st[=i]f; akin to D. stijf, G. steif, Dan. stiv, Sw. styf, Icel. st[=i]fr, Lith. stipti to be stiff; cf. L. stipes a post, trunk of a tree, stipare to press, compress. Cf.… …
45Heresy — • St. Thomas defines heresy: a species of infidelity in men who, having professed the faith of Christ, corrupt its dogmas Catholic Encyclopedia. Kevin Knight. 2006. Heresy Heresy …
46adamant — I adjective callous, firm, frozen, hard hearted, immovable, immutable, implacable, inelastic, inexorable, inflexible, intractable, irreconcilable, merciless, obdurate, persistent, pertinacious, resolute, rigid, stationary, stiff, stubborn, tough …
47determined — I (certain) adjective ascertained, attested, authenticated, certified, conditioned, confined, confirmed, definite, established, finite, firm, fixed, indomitable, industrious, inexorable, inflexible, intentional, peremptory, positive, prescriptive …
48diligent — I adjective assiduous, attentive, busily intent, businesslike, busy, conscientious, constant, dependable, diligens, dogged, enduring, exact, faithful, fastidious, hardworking, heedful, indefatigable, industrious, industrius, never idle, never… …
49faithful — I (diligent) adjective assiduous, attentive, careful, conscientious, constant, dogged, exacting, fidelis, fidus, indefatigable, industrious, laborious, meticulous, mindful, painstaking, particular, persevering, persistent, pertinacious,… …
50headstrong — I adjective audacious, bullheaded, cantankerous, contrary, contumacious, disobedient, foolhardy, forward, headlong, hot blooded, impetuous, incautious, inexorable, inflexible, intractable, irresponsible, obdurate, obstinate, pertinacious,… …