untouchable

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un·touch·a·ble / ˌənˈtəchəbəl/ • adj. 1. not able or allowing to be touched or affected: a receptionist looking gorgeous and untouchable. ∎  unable to be matched or rivaled: we took the silver medal behind the untouchable U.S. team. 2. of or belonging to the lowest-caste Hindu group or the people outside the caste system.• n. a member of the lowest-caste Hindu group or a person outside the caste system. Contact with untouchables is traditionally held to defile members of higher castes.DERIVATIVES: un·touch·a·bil·i·ty / -ˌtəchəˈbilitē/ n.