forbidden, esp on grounds of morality, tradition, or social usage rather than being illegal

a prohibition imposed by social custom

Whenever a taboo is broken, something good happens, something vitalizing — Henry Miller

a prohibition, esp in Polynesia, against touching, saying, or doing something for fear of harm from a supernatural force

an object, word, behaviour, etc that is prohibited

to set (something) apart or ban as taboo

to avoid or ban (something) as taboo