堅持不懈的英文名詞是perseverance。

Perseverance is the unwavering continuation of a purpose, effort, or course of action, often in the face of difficulties or opposition. It is the determination to persist in the face of setbacks and never giving up. As a noun, perseverance refers to this unwavering determination and effort, and it is often associated with success and achievement.

In life, perseverance is essential for achieving our goals and overcoming obstacles. It takes perseverance to complete a project, learn a new skill, or pursue a challenging career path. When faced with challenges or difficulties, the person with perseverance will remain focused and determined, while the person without it may easily give up and succumb to defeat.

The value of perseverance cannot be overstated, as it is a critical component of success in all areas of life.