persisted
v.v. to keep doing something even when it is difficult or when other people tell you to stop. It also describes a situation or feeling that continues to exist for a long time.
v. to continue firmly in an opinion or a course of action despite difficulty or opposition; to remain in existence. The past tense of 'persist'.
The rain persisted throughout the entire afternoon.
Despite several warnings from his manager, he persisted in arriving late to every morning meeting.
Although the initial symptoms of the infection were mild, the cough persisted for several weeks, eventually requiring a more aggressive course of antibiotics to fully resolve.
Intransitive; when followed by an action, it typically takes the preposition 'in' plus a gerund ('persisted in doing').
he persisted to shouthe persisted in shoutingWhen followed by another verb, persist requires the preposition 'in' and the -ing form, not the infinitive.