- 1 a cultural or religious custom that does not allow people to do, use, or talk about a particular thing as people find it offensive or embarrassing an incest taboo a taboo against working on Sunday to break/violate a taboo Death is one of the great taboos in our culture.
- 2a general agreement not to do something or talk about something The subject is still a taboo in our family.
NAmE//təˈbu//, NAmE//tæˈbu//(pl. taboos) taboo (against/on something)
in the days when sex was a taboo subject Any talk of the divorce is strictly taboo.
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