American Dictionary

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Definition mad in American English

mad adjective

adjective
/mæd/

▪ completely, really, slightly, totally, utterly

1

angry

Example

He makes me mad, the way he keeps criticizing me.

Example

My boss is mad at me for missing the meeting.

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2

very silly or stupid

Example

You're mad to spend so much money on clothes.

Synonyms and related words
2.1

tending to behave in a strange way that other people sometimes consider funny

Example

a mad scientist

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2.2

an offensive way for describing someone who is mentally ill

Example

She was completely mad.

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3

done quickly or without thinking, in a way that is badly organized

Example

There were people everywhere - it was all a bit mad!

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Example

Mom will be mad as a wet hen if we don't get home soon.

Example

Your dad will be as mad as hell when he finds out you took his car.

Example

I will be mad as hell if he gets here late.

Definition mad in American English