Open English Wordnet
Nouns
Adjectives
(s)untouchablebeyond the reach of criticism or attack or impeachment“for the first time criticism was directed at a hitherto untouchable target” (Newsweek)
(s)inaccessible, unobtainable, unprocurable, untouchablenot capable of being obtained“a rare work, today almost inaccessible”, “timber is virtually unobtainable in the islands”, “untouchable resources buried deep within the earth”