best evidence rule

1 9.0

A rule that requires showing the original document, photo, or recording in court to prove its content

noun
/bɛst ˈɛvɪdəns rul/

Formal

: regla de la mejor evidencia

The court rejected the photocopy as evidence because it violated the best evidence rule.

Examples

Under the best evidence rule, the original contract must be presented to prove its terms in court.
The best evidence rule is crucial in legal proceedings.
Law students often study the best evidence rule when learning about rules of admissibility.
Did the lawyer follow the best evidence rule during the trial?
Under the best evidence rule, the plaintiff must present the original contract to support their claim.
In this case, the judge enforced the best evidence rule by insisting that the original photo be submitted.
To comply with the best evidence rule, the lawyer brought the signed document to court instead of a copy.

Surface Forms

best evidence rule singular

best evidence rules plural

Morphology

best + evidence + rule

The phrase literally combines 'best' + 'evidence' + 'rule', so a learner can infer it is a rule about preferring the strongest or most suitable evidence — the general compositional sense is accessible. However, the precise legal procedural meaning (that originals must be produced in court and the specific evidentiary scope) is specialized and not fully predictable from the parts, so it requires domain knowledge.

Etymology

Best evidence rule comes from the idea that a court should see the best evidence — the original paper, photo, or recording — rather than a copy. So the rule means you must bring the original item to 'prove' what it says when it is available.