as defined by the Oxford English Dictionary.

• chthonic; dwelling in or beneath the surface of the earth
• consanguinity; the condition of being of the same blood; relationship by descent from a common ancestor; blood-relationship
• malapropism (malaprops); the ludicrous misuse of words, esp. in mistaking a word for another resembling it; an instance of this
• atavistic relating to or characterized by reversion to something ancient or ancestral