彼は人が良さそうに見えるが本当は底意地が悪い。

tbd

He seems nice, but he's wicked at heart.

７０才の老人は２０才の妻をつねに家において離さなかった。その老人は底意地が悪かった。

tbd

The seventy-year-old man kept his twenty-year-old wife at home all the time; he had a dog-in-the-manger attitude.