Untouchable Definition

1. Designating, relating to, or of the kind that may not be touched or approached by others, especially because of pollution, disease, or a perceived sacredness. 2. (Sociology) Denoting or relating to people regarded as ritually impure and placed at the bottom of the social hierarchy in some parts of the world, especially in India, and subjected to discrimination and often prevented from direct social contact. 3. Informal, Unrestrained; arrogant; impertinent.