To feel at ease; to become relaxed and calm, free from anxiety or tension.
温泉に入って心が安らいだ。
Soaking in the hot spring put my mind at ease.
子どもの寝顔を見ると、不思議と安らぐ。
Seeing my child's sleeping face strangely makes me feel calm.
この音楽を聴くと、いつも気持ちが安らぐ。
Whenever I listen to this music, I always feel relaxed.