perseveration (n.)

late 14c., perseveracioun "will to persevere;" early 15c., "duration, quality of persisting," from Old French perseveracion "persistence, stubbornness" (13c.) and directly from Latin perseverationem (nominative perseveratio), noun of action from past-participle stem of perseverare "continue steadfastly, persist" (see persevere). Psychological sense (1903) is from German (see perseverate).