She pertinaciously pursued her research, ignoring setbacks until she achieved a breakthrough.

Her pertinacious refusal to compromise eventually earned her the respect of the entire team.

Her pertinaciousness in pursuing the overlooked clues ultimately solved the cold case.

The professor admired the student's pertinacy in pursuing research despite repeated setbacks.

The pertinacy of her remarks ensured the discussion stayed focused on the central issue.

Her pertinacies often frustrated colleagues who preferred compromise to confrontation.