In English-language punctuation, the serial comma, also referred to as the series comma, Oxford comma, or Harvard comma, [1] [2] is a comma placed immediately after the penultimate term and before the coordinating conjunction (and or or) in a series of three or more terms. [3] [4] [5] For instance, a list of three countries might be punctuated without the serial comma as "France, Italy and Spain" or with the serial comma as "France, Italy, and Spain". The serial comma can serve to avoid ambiguity in specific contexts, though its employment may also generate ambiguity under certain circumstances. [6]
Usage of the serial comma varies among writers and editors and also varies among the regional varieties of English. British English allows both the inclusion and omission of this comma, [7] whereas in American English the comma is common and even considered mandatory by several style guides, with the APA style, [8] The Chicago Manual of Style , Garner's Modern American Usage , [9] Strunk and White's The Elements of Style , [10] and the U.S. Government Printing Office Style Manual [11] either recommending or requiring it. In contrast, the Associated Press Stylebook and The New York Times Style Book [12] advise against its use. The Canadian Press stylebook in Canada similarly recommends against its employment. The majority of British style guides do not mandate its use, with The Economist Style Guide noting that most British writers use it solely to avert ambiguity. [13] Notably, The Oxford Style Manual advocates it (hence the name, "Oxford comma"). [14] However, the University of Oxford Style Guide (2014 edition) recommends against indiscriminate use. [15]
The Oxford Companion to the English Language notes: "Usage varies as to the inclusion of a comma before and in the last item. ... This practice is controversial and is known as the serial comma or Oxford comma, because it is part of the house style of Oxford University Press." [16]
The comma itself is widely attributed to Aldus Manutius, a 15th-century Italian printer who used a mark—now recognized as a comma—to separate words. [17] Etymologically, the word comma, which became widely used to describe Manutius's mark, comes from the Greek κόμμαlit. 'to cut off'. [18] The Oxford comma has been used for centuries in a variety of languages, though not necessarily in a uniform or regulated manner. [19]
The Oxford comma is most often attributed to Horace Hart, the printer and controller of the Oxford University Press from 1893 to 1915. Hart wrote the eponymous Hart's Rules for Compositors and Readers in 1905 as a style guide for the employees working at the press. [20] The guide called for the use of the serial comma, [21] but the punctuation mark had no distinct name until 1978, when Peter Sutcliffe referred to the Oxford comma as such in his historical account of the Oxford University Press. [22]
Sutcliffe, however, attributed the Oxford comma not to Horace Hart but to F. Howard Collins, [22] who mentioned it in his 1905 book, Author & Printer: A Guide for Authors, Editors, Printers, Correctors of the Press, Compositors, and Typists. [23]
Common arguments for consistent use of the serial comma:
Common arguments against consistent use of the serial comma:
Many sources are against both systematic use and systematic avoidance of the serial comma, making recommendations in a more nuanced way (see Recommendations by style guides and subsequent sections).
Omitting the serial comma may create ambiguity. Writers who normally avoid the serial comma often use one when it avoids ambiguity. Consider this apocryphal book dedication: [30]
There is ambiguity about the writer's parentage because "Ayn Rand and God" can be read as a renaming of [31] my parents, leading the reader to believe that the writer claims that Ayn Rand and God are the parents. A comma before and removes the ambiguity:
Nevertheless, lists can also be written in other ways that eliminate the ambiguity without introducing the serial comma, such as by changing the word order or by using other punctuation, or none, to introduce or delimit them (though the emphasis may thereby be changed):
An example collected by Nielsen Hayden was found in a newspaper account of a documentary about Merle Haggard:
A serial comma following "Kris Kristofferson" would help prevent this being understood as Kris Kristofferson and Robert Duvall being the ex-wives in question.
Another example:
It is unclear whether the eggs are being grouped with the bacon or the toast. Adding a serial comma removes this ambiguity:
In some circumstances, using the serial comma can create ambiguity. If the book dedication above is changed to
the serial comma after Ayn Rand creates ambiguity about the writer's mother because it uses punctuation identical to that used for an appositive phrase, leaving it unclear whether this is a list of three entities (1, my mother; 2, Ayn Rand; and 3, God) or of only two entities (1, my mother, who is Ayn Rand; and 2, God). [6]
Or consider
This is ambiguous because it is unclear whether "a maid" is an appositive renaming of Betty or the second in a list of three people. On the other hand, removing the final comma:
leaves the possibility that Betty is both a maid and a cook (with "a maid and a cook" read as an appositive phrase [33] ). So in this case neither the serial-comma style nor the no-serial-comma style resolves the ambiguity. A writer who intends a list of three distinct people (Betty, maid, cook) may create an ambiguous sentence, regardless of whether the serial comma is adopted. Furthermore, if the reader is unaware of which convention is being used, both styles can be ambiguous in cases such as this.
These forms (among others) would remove the ambiguity:
Ambiguities can often be resolved by the selective use of semicolons instead of commas when more separation is required. [34] General practice across style guides involves using semicolons when individual items have their own punctuation or coordinating conjunctions, but typically a "serial semicolon" is required. [35]
Wikipedia's Manual of Style (MOS:SERIAL) leaves use of the serial comma up to the editor so long as individual articles are consistent.
Lynne Truss writes: "There are people who embrace the Oxford comma, and people who don't, and I'll just say this: never get between these people when drink has been taken." [7]
Omitting a serial comma is often characterized as a journalistic style of writing, as contrasted with a more academic or formal style. [36] [37] [38] Journalists typically do not use the serial comma, possibly for economy of space. [39] In Australia and Canada, the serial comma is typically avoided in non-academic publications unless its absence produces ambiguity.
It is important that usage within a document be consistent; [40] inconsistent usage can seem unprofessional. [38]
In the U.S. state of Maine, the lack of a serial comma became the deciding factor in a $13 million lawsuit filed in 2014 that was eventually settled for $5 million in 2017. The U.S. appeals judge David J. Barron wrote, "For want of a comma, we have this case." [56] [57] [58]
In O'Connor v. Oakhurst Dairy, [59] a federal court of appeals was required to interpret a statute under which the "canning, processing, preserving, freezing, drying, marketing, storing, packing for shipment or distribution" of certain goods were activities exempted from the general requirement of overtime pay. The question was whether this list included the distribution of the goods, or only the packing of the goods for distribution. The lack of a comma suggested one meaning, while the omission of the conjunction or before "packing" and the fact that the Maine Legislative Drafting Manual advised against use of the serial comma suggested another. It said "Although authorities on punctuation may differ, when drafting Maine law or rules, don't use a comma between the penultimate and the last item of a series." [60] In addition to the absence of a comma, the fact that the word chosen was "distribution" rather than "distributing" was also a consideration, [61] as was the question of whether it would be reasonable to consider the list to be an asyndetic list. Truck drivers demanded overtime pay; the defense conceded that the expression was ambiguous but said it should be interpreted as exempting distribution activity from overtime pay. [61] The district court agreed with the defense and held that "distribution" was an exempt activity. On appeal, however, the First Circuit decided that the sentence was ambiguous and "because, under Maine law, ambiguities in the state's wage and hour laws must be construed liberally in order to accomplish their remedial purpose", adopted the drivers' narrower reading of the exemption and ruled that those who distributed the goods were entitled to overtime pay. Oakhurst Dairy settled the case by paying $5 million to the drivers, [62] and the phrase in the law in question was later changed to use serial semicolons and "distributing" – resulting in "canning; processing; preserving; freezing; drying; marketing; storing; packing for shipment; or distributing". [63]
The opinion in the case said that 43 of the 50 U.S. states had mandated the use of a serial comma and that both chambers of the federal congress had warned against omitting it, in the words of the U.S. House Legislative Counsel's Manual on Drafting Style, "to prevent any misreading that the last item is part of the preceding one"; only seven states "either do not require or expressly prohibited the use of the serial comma". [26] [27]
In 2020 a commemorative 50p coin was brought into circulation in the United Kingdom to mark "Brexit day", January 31, 2020, minted with the phrase "Peace, prosperity and friendship with all nations". English novelist Philip Pullman and others criticized the omission of the Oxford comma, while others said it was an Americanism and not required in this instance. [64] [65]
Punctuation marks are marks indicating how a piece of written text should be read and, consequently, understood. The oldest known examples of punctuation marks were found in the Mesha Stele from the 9th century BC, consisting of points between the words and horizontal strokes between sections. The alphabet-based writing began with no spaces, no capitalization, no vowels, and with only a few punctuation marks, as it was mostly aimed at recording business transactions. Only with the Greek playwrights did the ends of sentences begin to be marked to help actors know when to make a pause during performances. Punctuation includes space between words and both obsolete and modern signs.
The comma, is a punctuation mark that appears in several variants in different languages. Some typefaces render it as a small line, slightly curved or straight, but inclined from the vertical, others give it the appearance of a miniature filled-in figure 9 placed on the baseline. In many typefaces it is the same shape as an apostrophe or single closing quotation mark ’.
The apostrophe is a punctuation mark, and sometimes a diacritical mark, in languages that use the Latin alphabet and some other alphabets. In English, the apostrophe is used for three basic purposes:
The colon, :, is a punctuation mark consisting of two equally sized dots aligned vertically. A colon often precedes an explanation, a list, or a quoted sentence. It is also used between hours and minutes in time, between certain elements in medical journal citations, between chapter and verse in Bible citations, and, in the US, for salutations in business letters and other formal letter writing.
In English writing, quotation marks or inverted commas, also known informally as quotes, talking marks, speech marks, quote marks, quotemarks or speechmarks, are punctuation marks placed on either side of a word or phrase in order to identify it as a quotation, direct speech or a literal title or name. Quotation marks may be used to indicate that the meaning of the word or phrase they surround should be taken to be different from that typically associated with it, and are often used in this way to express irony. They are also sometimes used to emphasise a word or phrase, although this is usually considered incorrect.
The semicolon; is a symbol commonly used as orthographic punctuation. In the English language, a semicolon is most commonly used to link two independent clauses that are closely related in thought, such as when restating the preceding idea with a different expression. When a semicolon joins two or more ideas in one sentence, those ideas are then given equal rank. Semicolons can also be used in place of commas to separate items in a list, particularly when the elements of the list themselves have embedded commas.
In grammar, a conjunction is a part of speech that connects words, phrases, or clauses, which are called its conjuncts. That description is vague enough to overlap with those of other parts of speech because what constitutes a "conjunction" must be defined for each language. In English, a given word may have several senses and in some contexts be a preposition but a conjunction in others, depending on the syntax. For example, after is a preposition in "he left after the fight" but a conjunction in "he left after they fought".
And/or is an English grammatical conjunction used to indicate that one, more, or all of the cases it connects may occur. It is used as an inclusive or, because saying "or" in spoken or written English might be inclusive or exclusive.
Et cetera, abbreviated to etc., et cet., &c. or &c, is a Latin expression that is used in English to mean "and other things", or "and so forth". Translated literally from Latin, et means 'and', while cētera means 'the rest'; thus, the expression translates to 'and the rest '.
In written English usage, a comma splice or comma fault is the use of a comma to join two independent clauses. For example:
It is nearly half past five, we cannot reach town before dark.
Eats, Shoots & Leaves: The Zero Tolerance Approach to Punctuation is a non-fiction book written by Lynne Truss, the former host of BBC Radio 4's Cutting a Dash programme. In the book, published in 2003, Truss bemoans the state of punctuation in the United Kingdom and the United States and describes how rules are being relaxed in today's society. Her goal is to remind readers of the importance of punctuation in the English language by mixing humour and instruction.
The Latin adverb sic inserted after a quotation indicates that the quoted matter has been transcribed or translated as found in the source text, including erroneous, archaic, or unusual spelling, punctuation, and grammar. Sic also applies to any surprising assertion, faulty reasoning, or other matter that might be interpreted as an error of transcription.
Writing systems that use Chinese characters also include various punctuation marks, derived from both Chinese and Western sources. Historically, jùdòu annotations were often used to indicate the boundaries of sentences and clauses in text. The use of punctuation in written Chinese only became mandatory during the 20th century, due to Western influence. Unlike modern punctuation, judou marks were added by scholars for pedagogical purposes and were not viewed as integral to the text. Texts were therefore generally transmitted without judou. In most cases, this practice did not interfere with the interpretation of a text, although it occasionally resulted in ambiguity.
The dash is a punctuation mark consisting of a long horizontal line. It is similar in appearance to the hyphen but is longer and sometimes higher from the baseline. The most common versions are the en dash–, generally longer than the hyphen but shorter than the minus sign; the em dash—, longer than either the en dash or the minus sign; and the horizontal bar―, whose length varies across typefaces but tends to be between those of the en and em dashes.
The full stop, period, or full point. is a punctuation mark used for several purposes, most often to mark the end of a declarative sentence.
Punctuation in the English language helps the reader to understand a sentence through visual means other than just the letters of the alphabet. English punctuation has two complementary aspects: phonological punctuation, linked to how the sentence can be read aloud, particularly to pausing; and grammatical punctuation, linked to the structure of the sentence. In popular discussion of language, incorrect punctuation is often seen as an indication of lack of education and of a decline of standards.
In grammar, sentence and clause structure, commonly known as sentence composition, is the classification of sentences based on the number and kind of clauses in their syntactic structure. Such division is an element of traditional grammar.
The compound point is an obsolete typographical construction. Keith Houston reported that this form of punctuation doubling, which involved the comma dash (,—), the semicolon dash (;—), the colon dash, or "dog's bollocks" (:—), and less often the stop-dash (.—) arose in the seventeenth century, citing examples from as early as 1622. More traditionally, these paired forms of punctuation seem most often to have been called (generically) compound points and (specifically) semicolon dash, comma dash, colon dash, and point dash.
... omitting the final comma may cause ambiguities, whereas including it never will ...
In a series of three or more terms with a single conjunction, use a comma after each term except the last.
The comma is used ... after each member within a series of three or more words, phrases, letters, or figures used with and, or, or nor.
Most American writers and publishers use the serial comma; most British writers and publishers use the serial comma only when necessary to avoid ambiguity ...
Note that there is no comma between the penultimate item in a list and 'and'/'or', unless required to prevent ambiguity – this is sometimes referred to as the 'Oxford comma'.
It's just a matter of STYLE, and in this case, newspaper or literary (book) style. . . . Choose one style or the other the authorities say, but be consistent. Most writers recommend the literary style in college writing to avoid possible confusion . . .