Grammar

Comma Splice

A comma splice occurs when two independent clauses (complete sentences) are incorrectly joined with only a comma.

The Error

Comma splice: "I love writing, it helps me think clearly."

Both parts could stand alone as sentences, so a comma isn't enough to join them.

How to Fix It

MethodExample
PeriodI love writing. It helps me think clearly.
SemicolonI love writing; it helps me think clearly.
ConjunctionI love writing, and it helps me think clearly.
SubordinationI love writing because it helps me think clearly.

More Examples

Wrong: "The experiment failed, we tried again." Right: "The experiment failed, so we tried again."

Wrong: "She studied hard, she passed the exam." Right: "She studied hard; she passed the exam."

The easiest fix is often adding a conjunction (and, but, so, yet) after the comma.

Quick Test

Cover everything after the comma. If what remains is a complete sentence, AND what follows the comma is also complete, you likely have a comma splice.