QUASI-CONTRACT, in the civil law, an act without the strict form of a contract, but yet having the force thereof. In a contract there must be the mutual consent of both parties, but in a quasi-contract one party
may be bound or obligated to the other, without having given his consent to the act whereby he is obliged. For example: I have done your business, in your absence, without your procuration, and it has succeeded to your advantage. I have then an action against you for the recovery of what I have disbursed, and you an action against me to make me give an account of my administration, which amounts to a quasi-contract.
Quasi-Crime, or Quasi-delict, in the civil law, the action of a person who does damage, or evil, involuntarily. The reparation of quasi-crimes consists in making good the damages, with interest.