Meaning of pertinacious – Determined, high liking for someone or something.
Synonym – persistence, tenacious.
Antonym – irresolute, tentative.
Trick – A girl named Tina goes to a competition to dance, but suddenly his bone got broken before the competition. Per Tina kah rhi ki vo ab bhi dance kregi. So she is deteremined girl. Therefore pertinacious means determined and resolute.