Also known as:reasonableness · reasonably · reasonable person · reasonableness standard
Written by attorneys · grounded in primary & secondary sources — see below
A standard of conduct or judgment that is fair, proper, or moderate under the circumstances. It measures actions or beliefs against what a prudent person would do or accept when facing similar facts.
Sources & Authorities· 40 primary sources
Select any source to read its text and confirm it supports the definition.
Cases
Statutes
Federal Rules
Uniform Acts
Model Codes
Common Law
How it applies
Common Examples
6
Criminal Negligence Standard
Rachel Ramirez left her toddler unattended in a running car on a hot day while she ran an errand. The child died from heatstroke. Prosecutors charged involuntary manslaughter, arguing that Rachel's conduct grossly deviated from what a reasonable person would have done in the same situation.
Marketable Title Assessment
Ricardo Rojas contracted to sell land to Roland Rhodes. A recorded easement for a neighboring driveway appeared in the chain of title. Roland refused to close, claiming the title was unmarketable because a reasonably prudent purchaser with full knowledge would not accept it.
Pleading Certification
Ravi Reddy filed a complaint alleging specific contract breaches but noted that some supporting documents remained in the defendant's possession. His attorney certified that the factual contentions would likely gain evidentiary support after a reasonable opportunity for discovery.
Judicial Notice Ruling
Rhea Reynolds sought judicial notice that a particular intersection lies within the court's district. The court granted the request after confirming the location from an official municipal map whose accuracy could not reasonably be questioned.
Judicial Speech Restriction
Ruby Rivera, a sitting judge, gave a televised interview about an ongoing criminal trial in her courtroom. The comments suggested the defendant was likely guilty. The judicial conduct commission charged that the statements might reasonably be expected to affect the trial's fairness.
Remedial Measures Obligation
Rising Sun Electronics learned its client had submitted falsified invoices in a contract dispute. Counsel immediately withdrew the documents from the tribunal and disclosed the fraud, taking reasonable remedial measures required by the rules.
Common questions
Frequently Asked
6
How does the reasonable person standard differ between criminal negligence and civil negligence?+
Criminal negligence requires a substantially greater deviation from the conduct of a reasonable person than the level of negligence that suffices for civil liability. The deviation must create a high risk of death or serious bodily harm.
Supporting sources
What makes title unmarketable under the reasonable purchaser test?+
Title is unmarketable when it is not free from reasonable doubt and a reasonably prudent purchaser with full knowledge of the facts would refuse to accept it. Recorded encumbrances or gaps in the chain of title commonly render title unmarketable.
When may a lawyer certify facts under Rule 11 based on a reasonable opportunity for investigation?+
A lawyer may certify that factual contentions will likely have evidentiary support after a reasonable opportunity for further investigation or discovery. The certification must be made in good faith at the time of filing.
Supporting sources
What sources qualify for judicial notice under the reasonable-question standard?+
A fact may be judicially noticed if it can be accurately and readily determined from sources whose accuracy cannot reasonably be questioned. Official government records and maps typically meet this test.
Supporting sources
When does a judge's public statement risk violating the reasonable-expectation rule?+
A judge violates the rule by making any public statement that might reasonably be expected to affect the outcome or impair the fairness of a pending or impending matter. The test focuses on the objective likelihood of influence rather than the judge's subjective intent.
Supporting sources
What remedial steps satisfy the reasonable-measures requirement when a lawyer learns of client fraud?+
Reasonable remedial measures include, if necessary, disclosure to the tribunal. The lawyer must act promptly to correct the false evidence or statement once the fraud is known.
Supporting sources
diligence and dispatch to remove" the inequality in physical plant. But, as in the South Carolina case, the court sustained the validity of the contested provisions and denied the…
adopt to accomplish it. The
reasonableness
and hence the constitutional validity of any chosen method may be defended on the ground that it is in itself
reasonably
certain to inform those affected, compare Hess v. Pawloski , 274 U.…
in advance of trial by due diligence; (3) the party cannot properly prepare for trial without such production and inspection in advance and the failure to obtain inspection may un
reasonably
…
Civil ProcedurePretrial procedures · Preliminary injunctions and temporary restraining ordersUBEFoundational