persistence
n. uncountable B2 Upper Intermediate US //pɝˈsɪstəns// UK //pəsˈɪstəns// per·sis·tence
n. the quality of continuing to do something even when it is difficult or people try to stop you.
n. the firm or obstinate continuance in a course of action in spite of difficulty or opposition.
Her persistence finally paid off when she got the job.
The detective's persistence in following every lead eventually resulted in a breakthrough for the cold case.
While talent provides a necessary foundation, it is often the persistence of the researcher that determines whether a theoretical hypothesis is successfully proven through empirical data.
From Middle French persistance.
Usage
Often followed by the preposition 'in' when describing a specific action.