Commas: A Quick Guide

Let’s talk about commas—specifically, the Oxford comma, which is used before the final conjunction in a list of three or more items.

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Commas: A Quick Guide 

Let’s talk about commas—specifically, the Oxford comma, which is used before the final conjunction in a list of three or more items. At Bellevue College, we follow federal and state “plain language” initiatives, which recommend using the Oxford comma to reduce ambiguity and confusion. 

 

What Is the Oxford Comma? 

The Oxford comma is the comma placed before the conjunction in a list. While it’s sometimes debated, including it makes your writing clearer and avoids potential misinterpretations. 

  • Correct: I packed a sandwich, chips, and a bottle of water. 
  • Incorrect: I packed a sandwich, chips and a bottle of water. 

In the second example, it’s unclear if “chips and a bottle of water” are grouped together or separate items. 

 

When to Skip the Comma 

Certain common phrases that include a conjunction don’t need an extra comma. 

  • Correct: For breakfast, I had toast, eggs, and ham and cheese. 
  • Correct: She read about an Italian painter, sculptor, and architect. 

In these cases, adding a comma could break the natural flow of the sentence or create unnecessary separation. 

 

Why It’s Important 

Using the Oxford comma ensures your writing is clear, professional, and easy to read. It’s a small but impactful way to show attention to detail and reduce confusion for your audience. 

For more guidance on punctuation and style, visit the Bellevue College Style Guide. Remember, good punctuation isn’t just about the rules—it’s about making your writing shine! 

 

Last Updated December 18, 2024