persist

v. 1 (often foll. By in) continue firmly or obstinately (in an opinion or action) esp. Despite obstacles, remonstrance, etc. 2 (of a phenomenon etc.) Continue in existence; survive.  persistence n. Persistent adj. Persistently adv. [latin sisto stand]

v. i. To stand firm; to be fixed and unmoved; to stay; to continue steadfastly; especially, to continue fixed in a course of conduct against opposing motives; to persevere; -- sometimes conveying an unfavorable notion, as of doggedness or obstinacy.