taboo
 noun  /təˈbuː/
  /təˈbuː/
(plural taboos)
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- taboo (against/on something) 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 on working on a Sunday
 - to break/violate a taboo
 - Death is one of the great taboos in our culture.
 
Extra Examples- The play violates several taboos on sexuality.
 - his failure to observe the tribe's rigid taboos
 - taboos surrounding menstruation
 - the problem of breaking down deep-seated cultural taboos
 - the taboo about religion in British society
 - the taboo against marrying a foreigner
 - They broke cultural taboos against women attending such meetings.
 
 Oxford Collocations Dictionaryadjective- powerful
 - cultural
 - religious
 - …
 
verb + tabootaboo + nounpreposition- taboo about
 - taboo against
 - taboo on
 - …
 
See full entry        - taboo (against/on something) a general agreement not to do something or talk about something
- The subject is still a taboo in our family.
 
Oxford Collocations Dictionaryadjective- powerful
 - cultural
 - religious
 - …
 
verb + tabootaboo + nounpreposition- taboo about
 - taboo against
 - taboo on
 - …
 
See full entry        Word Originlate 18th cent.: from Tongan tabu ‘set apart, forbidden’; introduced into English by Captain Cook.