At rest and Unruffled

At rest adjective - In a state of repose or especially sleep.

Unruffled and at rest are semantically related. in calm topic. In some cases you can use "Unruffled" instead an adjective phrase "At rest".

Unruffled adjective - Free from emotional or mental agitation.

At rest and unruffled are semantically related. Sometimes you can use "At rest" instead an adjective "Unruffled".