CONSENSUAL

Con‐sen″su‐al (?), a. [[See Consent, v. i., and cf. Sensual.]] 1. 1. (Law) Existing, or made, by the mutual consent of two or more parties.
2. 2. (Physiol.) Excited or caused by sensation, sympathy, or reflex action, and not by conscious volition; as, consensual motions.
Consensual contract (Law), a contract formed merely by consent, as a marriage contract.