1. 实际的：no-no 禁忌 | no-nonsense 实际的 | no-one 没有一个

2. 严肃的：judging a book by its cover以貌取人 | no-nonsense严肃的 | assumptions假想

1. 讲究实际的;直截了当的;不容胡闹的
    If you describe someone as a no-nonsense person, you approve of the fact that they are efficient, direct, and quite tough.

    e.g. She saw herself as a direct, no-nonsense modern woman.
           她认为自己是个直截了当、不拖泥带水的现代女性。

2. 简单实用的
    If you describe something as a no-nonsense thing, you approve of the fact that it is plain and does not have unnecessary parts.

no-nonsense的反义词

    e.g. You''ll need no-nonsense boots for the jungle.
           你需要一双实用的靴子穿越丛林。

1. not tolerating irrelevancies

    e.g. the no-nonsense tones of a stern parent