упорствовать znamená v Angličtina

persist [persisted, persisting, persists]▼(go on stubbornly or resolutely)
verb
[UK: pə.ˈsɪst] [US: pər.ˈsɪst]

press on▼(continue to advance)
verb
[UK: pres ɒn] [US: ˈpres ɑːn]