taboo

As adjectives the difference between taboo and nontaboo

is that taboo is excluded or forbidden from use, approach or mention while nontaboo is not taboo.

As a noun taboo

is an inhibition or ban that results from social custom or emotional aversion.

As a verb taboo

is to mark as taboo.

As adjectives the difference between taboo and speakable

is that taboo is excluded or forbidden from use, approach or mention while speakable is that can be spoken; utterable, verbalizable.

As a noun taboo

is an inhibition or ban that results from social custom or emotional aversion.

As a verb taboo

is to mark as taboo.

As a noun taboo

is an inhibition or ban that results from social custom or emotional aversion.

As an adjective taboo

is excluded or forbidden from use, approach or mention.

As a verb taboo

is to mark as taboo.

As a proper noun Demogorgon is

a pagan god or demon, associated with the underworld and envisaged as a powerful primordial being, whose very name was taboo; an incubus.