Tenacity 一词于15世纪初经古法语ténacité或者直接由拉丁语tenacitas（紧紧握住的行为）进入英语，相应用来表示“韧劲、保持力”，即能够牢牢抓住某物的品质或事实，

比如：

a memory of uncommon tenacity异常强的记忆力

从这个概念出发，现在则多用 tenacity 喻指“坚韧、坚毅、坚持、顽强、固执”，常意味着固执地坚持某个事物，能够顶住他人意图破坏的努力，不会轻易放弃，也不愿意承认失败，比如：目标的坚定不移

a tenacity of purpose

Talent, hard work and sheer tenacity are all crucial to career success.事业要成功，才能、勤奋和顽强的意志都至关重要。

In 2023, we have continued to forge ahead with resolve and tenacity. We have gone through the test of winds and rains, have seen beautiful scenes unfolding on the way, and have made plenty real achievements. We will remember this year as one of hard work and perseverance. Going forward, we have full confidence in the future.权威用例2023年，我们接续奋斗、砥砺前行，经历了风雨洗礼，看到了美丽风景，取得了沉甸甸的收获。大家记住了一年的不易，也对未来充满信心。

出自习主席2024年新年贺词（双语全文）

mettle: a person's ability to cope well with difficulties; spirit and resilience resolution: the quality of being determined or resolute perseverance: persistence in doing something despite difficulty or delay in achieving success同近义词