Synonym: forbidden, out, prohibited, proscribed, tabu, verboten. Similar words: baboon, get about, set about, just about, cast about, forget about, cast about for, book. Meaning: [tæ'buː /tə'b-] 
n. 1. a prejudice (especially in Polynesia and other South Pacific islands) that prohibits the use or mention of something because of its sacred nature 2. an inhibition or ban resulting from social custom or emotional aversion. v. declare as sacred and forbidden. adj. 1. excluded from use or mention 2. forbidden to profane use especially in South Pacific islands.
n. 1. a prejudice (especially in Polynesia and other South Pacific islands) that prohibits the use or mention of something because of its sacred nature 2. an inhibition or ban resulting from social custom or emotional aversion. v. declare as sacred and forbidden. adj. 1. excluded from use or mention 2. forbidden to profane use especially in South Pacific islands. 
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1, A taboo against sex before marriage.
2, Sex is considered taboo as a topic for discussion.
3, The topic of addiction remains something of a taboo.
4, There's a taboo on smoking in this office.
5, Rape is a taboo subject .
6, Is there a taboo against sex before marriage in your society?
7, The topic is taboo.
8, In this society there is a taboo on/against any sort of public display of affection.
9, Sometimes taboo words are written with asterisks to avoid causing offence.
10, The Celtic word "geis" is usually translated as "taboo".
11, Such work was taboo to women.
12, Mental illness is still a taboo subject.
13, Even the most taboo subjects were up for discussion.
14, Any mention of politics is taboo in his house.
15, Any talk of the divorce is strictly taboo.
16, Alcohol is taboo in this tribe.
17, For some people(sentencedict.com), death is a taboo subject.
18, The subject is still a taboo in our family.
19, The rude words are taboo in ordinary conversation.
20, Sex is no longer the taboo subject it used to be.
21, Cancer is a taboo subject and people are frightened or embarrassed to talk openly about it.
22, Her brisk treatment of an almost taboo subject was a breath of fresh air.
23, Questions and problems that were once taboo are now discussed openly.
24, It's taboo to date a man a lot younger than you.
25, Work is a taboo subject when we go out for dinner.
26, The subject of death was strictly taboo in their society.
27, Rape is an equally taboo subject.
28, On all counts - a taboo subject.
29, But confusion and anger and fear are taboo.
30, However,[http://sentencedict.com/taboo.html] almost nothing else was considered a taboo subject.
More similar words: baboon, get about, set about, just about, cast about, forget about, cast about for, book, boot, boom, boon, boost, booth, bamboo, book for, booming, notebook, by the book, textbook, bamboozle, pocketbook, about, above, labor, abort, go about, aboard, table, know about, above all.