He was a big, sardonic man, who intimidated even the most self-confident students.

他身材高大、爱讽刺人，甚至震慑住了最自信的学生们。

《柯林斯英汉双解大词典》

The man seems to be in his fifties - a successful businessman, we guess, self-confident and opinionated.

此人似乎五十几岁——我们猜他是个成功的企业家，自信而又固执。

youdao

The Playboy : This man is the active, self-confident, Don Juan-type seducer.

花花公子类： 这类当然多为男性，活跃自信，唐璜类的大众情人。

youdao

How can a man who had such a difficult background be so preternaturally self-confident?

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