The brahmavihāras, sublime or divine abidings, are four boundless attitudes toward all beings: mettā, loving-kindness; karuṇā, compassion; muditā, joy in others’ happiness; and upekkhā, equanimity. They are cultivated in meditation by extending them to oneself, friends, strangers, enemies and all beings without limit.
Brahmavihāras
The four divine abodes: loving-kindness, compassion, sympathetic joy and equanimity.
Also: Brahmaviharas, four immeasurables