Top roof radical - pictograph of a peaked house with sloping eaves. The indexing radical, setting the scene:
寡 pictures a lone figure inside an empty house. From that bleak image came 'few, scarce, widowed' (
寡妇 widow,
寡言 reticent). Same roof-family:
家 home,
安 safe,
寒 cold,
寂 quiet - rooms with a feeling.