tenacious
Tenacious describes someone who holds onto something—whether it is a goal, an opinion, or a physical object—with great persistence and determination. The mental image is of a bulldog with a bone in its mouth; it is not just working hard, but refusing to let go even when faced with significant obstacles. In terms of usage, it is generally a positive trait, suggesting grit and resilience. You will often hear it paired with "effort," "grip," or "spirit." It is slightly formal and is commonly used in professional contexts to praise someone's ability to see a difficult project through to completion.
In conversation
Discussing a colleague
I’m honestly worried about the project deadline.
I’m honestly worried about the project deadline.
Don't worry, Leo is on it. He’s incredibly tenacious.
Don't worry, Leo is on it. He’s incredibly tenacious.
Used here to praise someone's reliability under pressure.
Reflecting on a sport
That team was tenacious until the final whistle.
That team was tenacious until the final whistle.
Yeah, they really didn't give us any room to breathe.
Yeah, they really didn't give us any room to breathe.
Used here to describe a persistent opponent.
Examples
She is a tenacious student who never gives up on a problem.
She is a tenacious student who never gives up on a problem.
Despite the lack of funding, the team maintained a tenacious commitment to their research.
Despite the lack of funding, the team maintained a tenacious commitment to their research.
The lawyer’s tenacious pursuit of justice eventually brought the truth to light after years of litigation.
The lawyer’s tenacious pursuit of justice eventually brought the truth to light after years of litigation.
