un ‧ touch ‧ a ‧ ble /ʌnˈtʌtʃəb ə l/ BrE AmE adjective
[ Word Family: adjective : ↑ touched , ↑ untouched , ↑ touching , ↑ touchy , ↑ untouchable ; noun : ↑ touch , ↑ untouchable ; verb : ↑ touch ; adverb : ↑ touchingly ]
1 . someone who is untouchable is in such a strong position that they cannot be defeated, affected, or punished:
He was the boss’s husband and therefore untouchable.
2 . belonging to the lowest social group, especially in the Hindu ↑ caste system
—untouchable noun [countable]