off-limits(e.g. a topic of conversation • While people can joke about anything, there are a few subjects that are off-limits if a person wants to be seen as a sensitive, tasteful individual. Sexual abuse is one of them.Tanya Gesse)
verboten(The way they (Сosby, McDavid, Matthews) speak, you'd think they all head home via horse and buggy to some weird jock version of an Old Order Mennonite community where technology is verboten and everybody stares at their boots when they aren't handcrafting a table. VLZ_58)
taboo l.A prohibition against touching, saying, or doing (something) for fear of immediate harm from a supernatural force; 2. Forbidden to profane use or contact because of what are held to be dangerous supernatural powers; 3. To set apart as taboo by marking with a ritualistic symbol
