1. 重要的;事关重大的
    If you describe something such as an issue or a decision as weighty, you mean that it is serious or important.

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    e.g. 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？

2. (尤指书)重的，沉甸甸的
    You use weighty to describe something, especially a book, that is heavy or heavier than you would expect.

    e.g. Simon lifted a weighty volume from the shelf.
           西蒙从书架上取下一本厚重的书。

1. excessively fat

    e.g. a weighty man

    Synonym: corpulentobeserotund

2. having relatively great weight
    heavy

    e.g. a weighty load
           a weighty package

3. weighing heavily on the spirit
    causing anxiety or worry

    e.g. weighty problems

4. of great gravity or crucial import
    requiring serious thought

    e.g. grave responsibilities
           faced a grave decision in a time of crisis
           a grievous fault
           heavy matters of state
           the weighty matters to be discussed at the peace conference

    Synonym: gravegrievousheavy

5. powerfully persuasive

    e.g. a cogent argument
           a telling presentation
           a weighty argument

    Synonym: cogenttelling