Inverted pyramid
What Wikipedia is not
Wikipedia is not a manual, guidebook, textbook, or scientific journal. Articles and other encyclopedic content should be written in a formal tone. Standards for formal tone vary depending upon the subject matter but should usually match the style used in Featured- and Good-class articles in the same category. Encyclopedic writing has a fairly academic approach, while remaining clear and understandable. Formal tone means that the article should not be written using argot, slang, colloquialisms, doublespeak, legalese, or jargon that is unintelligible to an average reader; it means that the English language should be used in a businesslike manner (e.g. use "feel" or "atmosphere" instead of "vibes").
News style or persuasive writing
A Wikipedia article should not sound like a news article. Especially avoid bombastic wording, attempts at humor or cleverness, over-reliance on primary sources, editorializing, recentism, pull quotes, journalese, and headlinese.
Similarly, avoid persuasive writing, which has many of those faults and more of its own, most often various kinds of appeals to emotion and related fallacies. This style is used in press releases, advertising, editorial writing, activism, propaganda, proposals, formal debate, reviews, and much tabloid and sometimes investigative journalism. It is not Wikipedia's role to try to convince the reader of anything, only to provide the salient facts as best they can be determined, and the reliable sources for them.
Wikipedia is not a manual, guidebook, textbook, or scientific journal. Articles and other encyclopedic content should be written in a formal tone. Standards for formal tone vary depending upon the subject matter but should usually match the style used in Featured- and Good-class articles in the same category. Encyclopedic writing has a fairly academic approach, while remaining clear and understandable. Formal tone means that the article should not be written using argot, slang, colloquialisms, doublespeak, legalese, or jargon that is unintelligible to an average reader; it means that the English language should be used in a businesslike manner (e.g. use "feel" or "atmosphere" instead of "vibes").
News style or persuasive writing
A Wikipedia article should not sound like a news article. Especially avoid bombastic wording, attempts at humor or cleverness, over-reliance on primary sources, editorializing, recentism, pull quotes, journalese, and headlinese.
Similarly, avoid persuasive writing, which has many of those faults and more of its own, most often various kinds of appeals to emotion and related fallacies. This style is used in press releases, advertising, editorial writing, activism, propaganda, proposals, formal debate, reviews, and much tabloid and sometimes investigative journalism. It is not Wikipedia's role to try to convince the reader of anything, only to provide the salient facts as best they can be determined, and the reliable sources for them.
Comparison of styles
Image: Benjamin Busch/Import Projects - Wikimedia commons
[ed. In celebration of Wikipedia Day (roughly Jan. 15). It's easy to forget how awesome this product really is: a massive, free, indispensable resource tended to by hundreds (thousands?) of volunteers simply for altruistic reasons. The best of the internet (and reminder of what could have been). See also: Wikipedia:What Wikipedia is not]
