What is the antonym of rude?

The antonym of rude depends on the specific context, but some common options are:

General politeness:

* Polite

* Courteous

* Respectful

* Civil

* Considerate

Other options:

* Kind

* Gentle

* Gracious

* Mannersly

* Well-behaved

* Thoughtful

The best antonym will depend on the specific situation and the intended meaning.