priceless
/ˈpraɪslɪs/adjective
1- so precious that its value cannot be determined贵重的; 无价的; 无法估价的; 稀世之珍的：
priceless works of art.
艺术珍品。
1.1
- informal used to express great and usually affectionate amusement〈非正式〉极为有趣的, 极为可笑的：
darling, you're priceless!
亲爱的, 你太逗了！
派生词