Definitions from Wiktionary (unspeakable)

▸ adjective:  Incapable of being spoken or uttered
▸ adjective:  Impossible to speak about.
▸ adjective:  Unfit or not permitted to be spoken or described.
▸ adjective:  Extremely bad or objectionable.
▸ adjective:  (programming, not comparable) That cannot be referenced in source code, due to having no usable name.
▸ noun:  Something that cannot or must not be spoken about.
▸ Also see unspeakable

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