To make stupid.
To represent as stupid.
To reduce the intellectual demands of.
Pointless, foolish, lacking intellectual content or value.
Lacking brightness or clearness, as a colour.
Extremely stupid.
To become wise.
To advise; induce.
Usually with "up", to inform or learn.
To show the way, guide.
To cause to turn.
To direct the course of, pilot.
To instruct.
Disrespectful.
Aware, informed.
Showing good judgement or the benefit of experience.