Taboos:

Carl Noah & Michael Woodley:

"Taboos are social prohibitions against certain kinds of behaviour that emerge within moral communities. They serve to protect and reinforce the moral community's sacred values, which are those that its members treat as “possessing infinite or transcendental significance” (Tetlock, Kristel, Elson, Green, & Lerner, 2000, p. 853) and which they are therefore unwilling to compare or trade-off with other values (Tetlock, 2003; Tetlock et al., 2000)."