UNTOUCHABLE
inaccessible, unobtainable, unprocurable, untouchable
(adjective) not capable of being obtained; “a rare work, today almost inaccessible”; “timber is virtually unobtainable in the islands”; “untouchable resources buried deep within the earth”
untouchable
(adjective) (especially used in traditional Hindu belief of the lowest caste or castes) defiling
untouchable
(adjective) forbidden to the touch; “in most museums such articles are untouchable”
unassailable, untouchable
(adjective) impossible to assail
untouchable
(adjective) beyond the reach of criticism or attack or impeachment; “for the first time criticism was directed at a hitherto untouchable target”- Newsweek
untouchable, Harijan
(noun) belongs to lowest social and ritual class in India
Source: WordNet® 3.1
Etymology
Adjective
untouchable (comparative more untouchable, superlative most untouchable)
Not able to be touched.
Not able to be defeated or bested.
Noun
untouchable (plural untouchables)
A criminal who is so adept that they cannot be arrested or convicted.
A pariah.
In the Indian caste system, a member of the lowest caste.
An incorruptible law enforcement agent.
Source: Wiktionary