What is an antonym for writhing?

Here are some antonyms for writhing, depending on the specific context:

For physical movement:

* Stillness

* Immobility

* Resting

* Relaxing

* Lying peacefully

For emotional distress:

* Calmness

* Peacefulness

* Tranquility

* Serenity

* Composure

* Equanimity

For wriggling in annoyance:

* Contentment

* Happiness

* Pleasure

* Comfort

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