What is a comma splice?

A comma splice is when two independent clauses (complete sentences that can stand on their own) are linked together using only a comma.

Why comma splices should be avoided

Comma splices should be avoided in formal writing because they can affect the clarity and flow of a sentence. That’s because, when only two clauses are joined by a comma, the reader is expecting at least one more item. When the sentence ends before the reader anticipates it, their reading momentum is stopped. Consider this example:

I enjoy reading, I read every day.

The comma separating only two clauses makes it seem like there should be more after  ‘every day’ which causes a pause and distracts from the writing.

What are the solutions?

To avoid using a comma splice you can consider using one of the following solutions:

• Add a coordinating conjunction such as and, but, or so. If the second clause is quite lengthy, you may want to keep the comma before the conjunction.

• Replace the comma with a semicolon.

• Add a period, making each clause its own sentence.
  

Examples:

Comma splice (incorrect):

• I enjoy reading, I read every day.
  

Corrected versions:

• I enjoy reading and I read every day. I enjoy reading, and I read every day before I go to bed (longer second clause).

• I enjoy reading; I read every day.

• I enjoy reading. I read every day.

Are comma slices ever acceptable?

Comma splices are successfully found in informal writing, particularly in fiction, where they are often used with short, related clauses, especially in dialogue:

‘Let me go, you’re hurting me.’

Strictly speaking, that’s two independent clauses with a comma splice. However, it doesn’t seem distracting because the speech appears and sounds natural.

Conclusion

Comma splices can be acceptable in informal writing, but it’s important to understand what they are to make an informed decision. If you’re unsure whether you should fix it or leave it, try reading the sentence aloud.

Although there are rules regarding comma splices, if the writing flows well and makes sense, it can be acceptable to overlook them.

I hope this helps you tackle your commas with more confidence! Happy writing!