The first known use of fatuous was in 1633.

Can a person be fatuous?

If you describe a person, action, or remark as fatuous, you think that they are extremely silly, showing a lack of intelligence or thought.

Is Infatuous a word?

verb (used with object), in·fat·u·at·ed, in·fat·u·at·ing. to inspire or possess with a foolish or unreasoning passion, as of love. to affect with folly; make foolish or fatuous. infatuated.