Holding firmly to something, such as a belief or opinion, and not easily letting go. Her tenacious grip on her principles made her a respected leader in the community.
Persistently continuing or enduring in a course of action despite difficulties or obstacles. The tenacious athlete trained every day, regardless of the weather, to prepare for the marathon.
Tending to keep a firm hold on something; clinging or adhering closely. The tenacious ivy clung to the old stone wall, covering it completely.
Not easily separated or pulled apart; cohesive or adhesive in nature. The clay remained tenacious, sticking to his hands as he shaped the pot.