I.firmness, in a good and bad sense; resolution, steadfastness, determination, inflexibility, stubbornness, obstinacy (class.; “syn.: pertinacia, contumacia): quae ego omnia obstinatione sententiae repudiavi,” out of adherence to my principles, Cic. Prov. Cons. 17, 41: “animi,” Sen. Ep. 94, 7: “fidei,” Tac. H. 3, 39: “taciturna,” obstinate silence, Nep. Att. 22, 2: “inflexibilis,” Plin. Ep. 10, 97, 3.—In plur., Tert. ad Nat. 1, 17.
obstĭnātĭo , ōnis, f. obstino,