- persevering; tenacious
- a tenacious man／a man of great tenacity
- He lacks tenacity [perseverance／((米口))stick-to-it-iveness].
- In the end his stamina brought him success.
- We urged him persistently [patiently] to accept the presidency.／((口)) We kept after him (tirelessly) to accept the presidency.
- 「He persevered in [He stuck doggedly to] his research.