Akademik

untouchable
adj. & n.
—adj. that may not or cannot be touched.
—n. a member of a hereditary Hindu group held to defile members of higher castes on contact.
Usage:
Use of the term, and social restrictions accompanying it, were declared illegal under the Indian constitution in 1949.
Derivatives:
untouchability n. untouchableness n.

Useful english dictionary. 2012.