1. A topic or matter that has not been addressed, discussed, or dealt with; a subject left unexplored or unresolved
The budget cuts remain an untouched subject in the board meeting.
Os cortes orçamentários permanecem um assunto intocado na reunião do conselho.
2. A sensitive or controversial topic that people avoid discussing
His infidelity was an untouched subject in their marriage.
Sua infidelidade era um assunto intocado em seu casamento.