Waiver is defined as the act of voluntarily giving up a right or privilege that a person otherwise would have had.
Intentional relinquishment of a right, claim, or privilege.
Duhaime Legal Dictionary
An intentional relinquishment or abandonment of a known right or privilege.
The act of intentionally or knowingly relinquishing or abandoning a known right, claim, or privilege
n. the intentional and voluntary giving up of something, such as a right, either by an express statement or by conduct (such as not enforcing a right). The problem which may arise is that a waiver may be interpreted as giving up the right to enforce the same right in the future. Example: the holder of a promissory note who several times allows the debtor to pay many weeks late does not agree to waive the due date on future payments. A waiver of a legal right in court must be expressed on the record.
Lect Law Library
The relinquishment or refusal to accept of a right.
In practice it is required of every one to take advantage of his rights at a proper time and, neglecting to do so, will be considered as a waiver. If, for example, a defendant who has been misnamed in the writ and declaration, pleads over, he cannot afterwards take advantage of the error by pleading in abatement, for his plea amounts to a waiver.
In seeking for a remedy the party injured may, in some instances, waive a part of his right, and sue for another; for example, when the defendant has committed a trespass on the property of the plaintiff, by taking it away, and afterwards he sells it, the injured party may waive the trespass, and bring an action of assumpsit for the recovery of the money thus received by the defendant.
In contracts, if, after knowledge of a supposed fraud, surprise or mistake, a party performs the agreement in part, he will be considered as having waived the objection.
It is a rule of the civil law, consonant with reason, that any one may renounce or waive that which has been established in his favor.
The voluntary giving up of a known right, often by contract.
The Free (Legal) Dictionary
The voluntary surrender of a known right; conduct supporting an inference that a particular right has been relinquished.
The term waiver is used in many legal contexts. A waiver is essentially a unilateral act of one person that results in the surrender of a legal right. The legal right may be constitutional, statutory, or contractual, but the key issue for a court reviewing a claim of waiver is whether the person voluntarily gave up the right. If voluntarily surrendered, it is considered an express waiver.
A waiver is the voluntary relinquishment or surrender of some known right or privilege.
While a waiver is often in writing, sometimes a person's actions can act as a waiver. An example of a written waiver is 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 is presumed one knows his or her rights and that those rights are voluntarily relinquished if they are not asserted at the time.
In civil procedure, certain arguments must be raised in the first objection that a party submits to the court, or else they will be deemed waived.