732
Opinion of the Court
Although "[a] rigid and undeviating judicially declared practice under which courts of review would invariably and under all circumstances decline to consider all questions which had not previously been specifically urged would be out of harmony with . . . the rules of fundamental justice," Hormel v. Helvering, 312 U. S. 552, 557 (1941), the authority created by Rule 52(b) is circumscribed. There must be an "error" that is "plain" and that "affect[s] substantial rights." Moreover, Rule 52(b) leaves the decision to correct the forfeited error within the sound discretion of the court of appeals, and the court should not exercise that discretion unless the error " 'seriously affect[s] the fairness, integrity or public reputation of judicial proceedings.' " United States v. Young, 470 U. S. 1, 15 (1985) (quoting United States v. Atkinson, 297 U. S. 157, 160 (1936)).
A
Rule 52(b) defines a single category of forfeited-but-reversible error. Although it is possible to read the Rule in the disjunctive, as creating two separate categories—"plain errors" and "defects affecting substantial rights"—that reading is surely wrong. See Young, 470 U. S., at 15, n. 12 (declining to adopt disjunctive reading). As we explained in Young, the phrase "error or defect" is more simply read as "error." Ibid. The forfeited error "may be noticed" only if it is "plain" and "affect[s] substantial rights." More precisely, a court of appeals may correct the error (either vacating for a new trial, or reversing outright) only if it meets these criteria. The appellate court must consider the error, putative or real, in deciding whether the judgment below should be overturned, but cannot provide that remedy unless Rule 52(b) applies (or unless some other provision authorizes the error's correction, an issue that respondents do not raise).
The first limitation on appellate authority under Rule 52(b) is that there indeed be an "error." Deviation from a legal
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