tenacious
/təˈneɪʃəs/
adjective
- Holding firmly to something, such as a belief, goal, or plan; persistent and determined.
- The team's tenacious defense kept them in the game until the final whistle.
- She was tenacious in her pursuit of a cure for the disease.
- He is a tenacious negotiator who never gives up on a deal.
- Tending to stick or cling firmly to something; not easily removed.
- The mud was so tenacious that it took hours to clean off my boots.
- The tenacious glue held the broken vase together for years.
- Moss is a tenacious plant that grows on rocks and walls.