The improper suppression or disguising of a fact, circumstance, or qualification which rests within the knowledge of one only of the parties to a contract, but which ought in fairness and good faith to be communicated to the other, whereby the party so concealing draws the other into an engagement which lie would not make but for his ignorance of the fact concealed. A neglect to communicate that which a party knows, and ought to communicate, is called a ” concealment .” Civ. Code Cal.
Black’s Law Online Dictionary
