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On site & on-site

“On-site” is an adjective. It comes before the noun it describes. “On site” is a prepostitional phrase. It comes after the noun it describes. “Onsite” is not a thing, but it looks like the name for a pretty rock. It’s preferable to...Read More

Widows & orphans

Where possible, ensure that your final word won’t sit by itself on a new line. Know, also, that we can’t always control for this, especially when our content adjusts to different screen sizes. Tip Pay attention to how your words will be presented. If your...Read More

Oxford comma

Sometimes called the serial comma. We recommend using the Oxford comma in a series of three or more terms with a single conjunction. Use a comma after the first item and in front of the conjunction: To avoid confusion, use a comma if an item in the series requires a...Read More


Always write “OpenTable,” never “Opentable” or “Open Table.” See also Brands & partners Third party trademarks...Read More

OK, O.K., & okay

The origins of “OK” as a term are murky at best, but the consensus is that it’s an acronym that’s become a word unto itself. “OK” is OK. “Okay” is not. Nor is “O.K.” See also Abbreviations & acronyms...Read More

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