Colons: A Guide on How to Use Colons, Plus Examples

August 6, 2025
5 min read
By Yash, D

Colons signify a close relationship between clauses, and introduce items in a list or series.

Colons: A Guide on How to Use Colons, Plus Examples

What’s a colon?

Stack two periods on top of each other, et vóila! A colon :  

👍🏼Usage Note

Study to acquire a habit of thinking: no study is more important.

I have three favorite fruits: apples, bananas, and mangoes.

He was tired: he stayed up all night.

If you want to succeed: you need to work hard.

How to use a colon

Word Form Examples
Other “The limitation of armaments, the acceptance of arbitration as the natural solvent of international disputes, the relegation of wars of ambition and aggression to the categories of obsolete follies : these will be milestones which mark the stages of the road.” —P.C. Wren, English Grammar and Composition.

I need a few items at the store: clothespins, a bottle opener, and napkins.

She has three dogs: two poodles and a beagle.

The American flag has three colors: red, white, and blue.

I need an assistant who can do the following: input data, write reports, and complete tax forms.

What’s the difference between a colon and a semicolon?

Answer: semicolons are used to connect two closely related sentences without coordinating conjunctions or commas. Colons signify a deeper relationships between the clauses, and either expands, adds emphasis or introduces a list.

💡Study Tip

Practice using the verb in different tenses with example sentences to memorize the correct forms.

Origin of the colon

The word ‘colon’ originates from the Latin and Greek languages: from Latin colon “part of a verse or poem,” from Greek kōlon “part of a verse,” literally “limb, member”.

In Review

Colons are used in sentences to:

1. Introduce a list or series;

2. Connect closely related clauses by adding emphasis or elaborating on the information that precedes the colon with the information that follows it.

Worksheet

Question 1 of 10

According to the blog post, what is one of the primary uses of a colon?



How does the blog post differentiate a colon from a semicolon?



When connecting two closely related clauses, the post states a colon can be used to signal a deeper relationship and:



The blog post describes a colon visually as:



Based on the examples provided for introducing lists, the colon typically follows:



Choose the correct punctuation to introduce the list: I need a few items at the storeclothespins, a bottle opener, and napkins.



Fill in the blank with the punctuation used to connect these related clauses: Study to acquire a habit of thinkingno study is more important.



Choose the correct punctuation to introduce the list: The American flag has three colorsred, white, and blue.



Fill in the blank with the punctuation used to connect these related clauses: He got what he worked forhe really earned that promotion.



Choose the correct punctuation to introduce the list: I need an assistant who can do the followinginput data, write reports, and complete tax forms.





FAQs

What is a colon?
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A colon looks like two periods stacked on top of each other (:). It’s a punctuation mark used in sentences primarily to introduce lists or connect related clauses, adding emphasis.

When is a colon used?
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Colons are used primarily to introduce a list or series. They also connect closely related clauses, elaborating or adding emphasis on the information that precedes it.

Can colons connect two clauses?
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Yes, the text shows that colons connect closely related clauses. The clause after the colon elaborates on or adds emphasis to the information in the preceding clause.

Can a colon introduce a list?
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Yes, the text states that colons are used primarily to introduce a list or series in sentences. It provides examples like “I need a few items at the store:”.

What’s the difference from a semicolon?
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According to the text, semicolons connect two closely related sentences without conjunctions. Colons signify deeper relationships, adding emphasis, elaborating, or introducing a list.

Yash, D. "Colons: A Guide on How to Use Colons, Plus Examples." Grammarflex, Aug 24, 2025, https://grammarflex.com/how-do-you-use-a-colon/.

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