perseverare (the proper word): constare (with or without sibi, to be consistent): perstare: consistere: persistere (to stand to, not to depart from; ☞ Herzog, Caes., B.G., 6, 36): manere, permanere (to abide by; all these usually with in re). To persevere in one’s principles, stare suis judiciis: to persevere in one’s course of life, in vitae perpetuitate sibi constare: to persevere in an undertaking, perstare in incepto: to persevere in a purpose or design, perseverare in proposito; tenere consilium; consilium non mutare; sibi constare.