soothe, calm, pacify
宥 centers on easing tension or harshness: soothing agitation, calming anger, or pacifying conflict. It also extends to forgiving or letting go of a grievance.
宥 combines 宀 (roof, building) with 有 (exist, have). The roof likely suggests shelter or containment, while 有 may contribute the sound and the idea of having or holding, together expressing the act of sheltering or holding back anger to soothe or forgive.
Under a roof 宀, you have 有 a calm space where anger is held back and soothed. Picture someone being pacified inside a quiet room.
For ユウ, imagine soothing someone by saying 'you' in a gentle voice: 'you' -> ユウ, and your calm tone pacifies them under the roof.