Adjective
1. beyond the reach of criticism or attack or impeachment;
"for the first time criticism was directed at a hitherto untouchable target"- Newsweek2. impossible to assail
3. forbidden to the touch;
"in most museums such articles are untouchable"4. defiling to the touch; especially used in traditional Hindu belief of the lowest caste or castes
5. 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"