v. стойко, упорно продолжать, упорно добиваться (in, with); If you persevere at/in your search for a job, you are sure to find something suitable. It's not easy to persevere with such dull work, but it has to be finished.
PERSEVERE
Англо-русский перевод PERSEVERE
Мюллер. English-Russian Muller's dictionary bed edition. Англо-Русский словарь Мюллера редакция bed. 2012