A waiver's the voluntary or surrender of some known right or privilege. While a waiver's often in writing, sometimes a person's actions can act as a waiver. An example of a written waiver's a disclaimer, which becomes a waiver when accepted. Other names for waivers are exculpatory clauses, releases, or hold harmless clauses. Sometimes the elements of "voluntary" and "known" are established by a legal fiction. In this case, it's presumed one knows his or her rights and that those rights are volu… (More on Waiver)