The Hebrew verb badad (H909) means to be isolated, to remain alone, or to be separated from others. It conveys a state of solitude that may be enforced (as with a leper) or existential (as with a grieving city).
Badad opens the book of Lamentations — Jerusalem sits 'alone' like a widow, abandoned by her former glory. This is the ultimate covenant consequence: separation from God and community. Yet God also led Israel alone (Deuteronomy 32:12), showing that solitude in God's hands becomes formation rather than desolation. Christ bore the ultimate aloneness — forsaken on the cross — so that his people would never be truly alone again.