taboo
nounUK /təˈbuː/
US /təˈbuː/
Something people are not allowed to talk about or do because it is considered bad or forbidden.
In some cultures, it is a taboo to talk about money at dinner.
RELATED WORDS
OTHER MEANINGS
2. A social custom that forbids something.
The tribe has many taboos about food.
3. Describing something that is not allowed.
That topic is taboo in our house.
4. To forbid something officially or socially.
The elders tabooed the use of that name.