What is opposite of atrocious?

The opposite of atrocious depends on the context, but some common antonyms include:

General antonyms:

* Excellent

* Wonderful

* Splendid

* Magnificent

* Superb

* Outstanding

* Delightful

* Fabulous

* Exquisite

* Brilliant

* Marvelous

Antonyms specific to different meanings of "atrocious":

* For bad quality: Excellent, Superb, Exceptional

* For cruelty/horrific: Kind, Compassionate, Benevolent, Humane

* For taste/appearance: Delicious, Beautiful, Lovely

The best opposite will depend on the specific meaning of "atrocious" in the context you are using it.