挚友是指关系非常亲密、可以交心的好朋友，比普通朋友更亲近。
这个词儿在中文里特别有温度，形容那种能一起扛事儿、掏心窝子的铁哥们儿。
"挚友"还可以指：
1. 知心朋友，能分享秘密的那种
2. 生死之交，过命的交情
3. 精神伴侣，灵魂相通的伙伴
"挚友"用英文怎么说才地道
挚友英文翻译 - 老炮儿解析
原文 (中文)
译文 (English)
Bosom friend refers to a very close and intimate friend with whom you can share your deepest thoughts - way closer than just a regular buddy.
This term carries so much warmth in Chinese, describing those ride-or-die homies you can count on through thick and thin.
"Bosom friend" can also mean:
1. A confidant - someone you can spill your secrets to
2. A sworn friend - friendship that's been tested by life and death
3. A kindred spirit - someone who just gets you on a soul level
Pro tip: 老外也常说"BFF" (Best Friends Forever) 来表示死党，但比起"挚友"少了几分深沉。想要表达那种"一个眼神就懂你"的感觉，用"soulmate"也特合适！