Undue Influence

Definition

Improper pressure or manipulation that destroys a person's free will in making a decision, often used to invalidate contracts or wills. It's like brainwashing with legal consequences.

Example Usage

The heir challenged the will on grounds of undue influence by the caregiver.

Origin

English common law, evolved from equity jurisprudence

Fun Fact

Undue influence is notoriously hard to prove because you have to show the influencer had opportunity, intent, and actually changed the person's mind.

Source: Probate law and contract law

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