Focus on the pronunciation of tenacious
English definition of “tenacious”
/təˈneɪ·ʃəs/ adj [not gradable]
› unwilling to accept defeat or stop doing or having something: Seles is a tenacious opponent – she never gives in. tenacity
/təˈnæs·ɪ·t̬i/ n [U] › They cling with admirable tenacity to their traditions.