Formal:
* Détendu(e) (masculine/feminine): This is the most direct translation of "relaxed" and can be used in most situations.
* Calme (masculine): This means "calm" and implies a state of tranquility.
* Tranquille (masculine): Similar to "calme," this means "tranquil" and emphasizes a peaceful state.
Informal:
* Décontracté(e) (masculine/feminine): This means "relaxed" but also implies a casual and informal attitude.
* Cool (masculine): This is a common slang term that means "chill" or "cool."
* Zen (masculine): This refers to a state of calmness and serenity, often associated with mindfulness.
* A l'aise (masculine/feminine): This means "at ease" and implies a sense of comfort and relaxation.
Examples:
* Je me sens détendu(e). (I feel relaxed.)
* La musique était vraiment cool. (The music was really chill.)
* Il a l'air zen. (He seems zen.)
* Je suis à l'aise ici. (I feel at ease here.)
Remember to choose the most appropriate word based on the situation and the level of formality.