mad

[Winwin2011]

If a person says " He's mad".


Mad =mentally ill or angry?

[Barb_D]

You can't know without context.

In the US, we are more likely to mean angry than crazy, but you still need context.

[emsr2d2]

As Barb D said, without context it's impossible to tell.

In BrE, it's more likely to mean "mentally ill" but "mad" is being used more and more often here to mean "angry" too.