If "madras" refers to a type of fabric:
* Antonyms: There's not a direct antonym for the fabric type "madras." You could use words like plain, solid, or smooth to describe fabrics that are not madras.
If "madras" refers to the city in India:
* Antonyms: There are no antonyms for a specific place name.
If "madras" is used as a slang term for someone who is angry or crazy:
* Antonyms: Calm, collected, rational, composed, sane.
Please provide more context so I can give you a more precise answer.