The Plain meaning rule, also known as the literal rule, is a type of statutory construction, which dictates that statutes are to be interpreted using the ordinary meaning of the language of the statute unless a statute explicitly defines some of its terms otherwise. In other words, the law is to read, word for word and should not divert from its true meaning. It is the mechanism that underlines textualism and, to a certain extent, originalism.
To avoid ambiguity, legislatures often include "definitions" sections within a statute, which explicitly define the most important terms used in that statute. But some statutes omit a definitions section entirely, or (more commonly) fail to define a particular term. The plain meaning rule attempts to guide courts faced with litigation that turns on the meaning of a term not defined by the statute, or on that of a word found within a definition itself.
According to the plain meaning rule, absent a contrary definition within the statute, words must be given their plain, ordinary and literal meaning. If the words are clear, they must be applied, even though the intention of the legislator may have been different or the result is harsh or undesirable. The literal rule is what the law says instead of what the law means.
Prof. Larry Solum's Legal Theory Lexicon expands on this premise:
Justices normally impose an absurdity limit on this rule, which states that a statute cannot be interpreted literally if it would lead to an absurd result. The Supreme Court act Chung Fook v. White (1924) marked the beginning of the looser American Rule that the intent of the law was more important than its text.
This is sometimes termed the soft plain meaning rule, where the statute is interpreted according to the ordinary meaning of the language, unless the result would be cruel or absurd. For example, see Rector, Holy Trinity Church v. United States, 143 U.S. 457 (1892). Even the most vocal supporters of textualism and the plain meaning rule have been willing to commute "strict" plain meaning to "soft" plain meaning to a certain extent, in some circumstances; see, e.g. United States v. X-Citement Video, 513 U.S. 64 (1994) (Scalia, J., dissenting):
In the United Kingdom, this is referred to as the Golden Rule.
Proponents of the plain meaning rule claim that it prevents courts from taking sides in legislative or political issues. They also point out that ordinary people and lawyers do not have extensive access to secondary sources.
In probate law the rule is also favored because the testator is typically not around to indicate what interpretation of a will is appropriate. Therefore, it is argued, extrinsic evidence should not be allowed to vary the words used by the testator or their meaning. It can help to provide for consistency in interpretation.
This is the oldest of the rules of construction and is still used today, primarily because judges may not legislate. As there is always the danger that a particular interpretation may be the equivalent of making law, some judges prefer to adhere to the law's literal wording.
Opponents of the plain meaning rule claim that the rule rests on the erroneous assumption that words have a fixed meaning. In fact, words are imprecise, leading justices to impose their own prejudices to determine the meaning of a statute. However, since little else is offered as an alternative discretion-confining theory, plain meaning survives.
An explanation of the rule was given in the Sussex Peerage Case (1844; 1 Cl&Fin 85). "The only rule for construction of Acts of Parliament is that they should be construed according to the intent of the Parliament which passed the Act. If the words of the Statute are in themselves precise and unambiguous, then no more can be necessary than to expound those words in that natural and ordinary sense. The words themselves alone do, in such a case, best declare the intention of the law giver."
Ironically, however, use of the literal rule may defeat the intention of Parliament. For instance, in the case of Whiteley v. Chappel (1868; LR 4 QB 147), the court came to the reluctant conclusion that Whiteley could not be convicted of impersonating "any person entitled to vote" at an election, because the person he impersonated was dead. Using a literal construction of the relevant statutory provision, the deceased was not "a person entitled to vote."
This, surely, cannot have been the intention of Parliament. However, the literal rule does not take into account the consequences of a literal interpretation, only whether words have a clear meaning that makes sense within that context. If Parliament does not like the literal interpretation, then it must amend the legislation.
In the Supreme Court of the United States, the plain meaning rule is returning to favor after a period of disfavor.