Which should you use, thorough or through? The adjective thorough means detailed and careful. The adjective through means having finished using or doing something.
| Incorrect: |
He took a through look at my car. |
| Correct: |
He took a thorough look at my car. |
| Incorrect: |
Are you thorough with the textbook? |
| Correct: |
Are you through with the textbook? |
