Serein (en. Serene)

/sə.ʁɛ̃/

Slang Meanings

Sensation of extreme relaxation.
After this meditation, I feel extremely serene.
Après cette méditation, je me sens hyper serein.
Calm and composed demeanor.
He always walks with a serene step, without rushing.
Il avance toujours d'un pas serein, sans se presser.