: not acceptable to talk about or do
Sex is a taboo subject for many people.
In this company, dating a coworker is considered taboo.
plural taboos
1
: a rule against doing or saying something in a particular culture or religion
religious/social taboos against drinking alcohol
2
: something that is not acceptable to talk about or do : something that is taboo
Marrying a close relative is a taboo in many cultures.
Cite this Entry
“Taboo.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/taboo. Accessed 18 Jun. 2026.
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