To persist in any business or enterprise undertaken; to pursue steadily any project or course begun; to maintain a purpose in spite of counter influences, opposition, or discouragement; not to give or abandon what is undertaken.
persevere in Dutch is blijven aandringen
persevere in German is ausdauern, beharren, ausdauern
persevere in Italian is sopportare
persevere in Latin is persevero, teneo, persisto
persevere in Spanish is aguantar, perseverar