weightiest
adj. 重大的,重要的,严重的( weighty的最高级 )
If you describe something such as an issue or a decision as weighty, you mean that it is serious or important.
Surely such weighty matters merit a higher level of debate?
这样重大的事件谅必应进行更高级别的讨论吧?
You use weighty to describe something, especially a book, that is heavy or heavier than you would expect.
Simon lifted a weighty volume from the shelf.
西蒙从书架上取下一本厚重的书。