pertinacious
pertinacious[ˌpəːtɪˈneɪʃəs]adjective- (formal)holding firmly to an opinion or a course of action
(正式)坚持的,锲而不舍的,顽强的
he worked with a pertinacious resistance to interruptions.
他顽强地坚持不间断地工作。
派生pertinaciouslyadverbpertinaciousnessnounpertinacitynoun语源- early 17th cent.: from Latin pertinax, pertinac- 'holding fast' + -ous
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