| taboo | Any negative tradition or behaviour that is generally regarded as harmful to social welfare and forbidden within a cultural or social group. (12 Dec 1998) |
|---|---|
| incest | Sexual activity between individuals so closely related that marriage is prohibited. Incest involving a child is a form of child abuse. (12 Dec 1998) |
| incest barrier | In psychoanalysis, the learning or internalization of parental and social prohibitions against incest. (05 Mar 2000) |