粘り強い

1. Origins, structure, and basic meaning

• Structure: 粘り強い(ねばりづよい) describes persistence without giving up easily despite difficulty.
• Basic usage: It is used for continuing negotiations or looking for a way forward after failures.

2. Common pitfalls and similar expressions

• Persistence compared with 頑固
  • 頑固(がんこ) emphasizes stubbornness in refusing to change one's views or attitude. 粘り強い focuses on sustained effort toward a goal.