So vs Therefore
When to use each in English, with meaning, register, and examples.
| So | Therefore | |
|---|---|---|
| Meaning | used to say that something is true or to show a result | For that reason; as a result. |
| Register | - | formal |
| CEFR level | A1 | B1 |
| Part of speech | adverb | adverb |
| Usage notes | Used to connect sentences, showing cause and effect. In informal contexts, it can start statements or express agreement but may be considered vague in formal writing. | Use 'therefore' to connect ideas in formal writing or speech. It’s less common in everyday conversation and can sound stiff. Avoid it in casual contexts. |
Frequently asked questions: So vs Therefore
What's the difference between "So" and "Therefore"?
"So" means: used to say that something is true or to show a result "Therefore" means: For that reason; as a result.
When should I use "So" and "Therefore"?
"Therefore" is formal.
Are "So" and "Therefore" the same CEFR level?
"So" is at A1, "Therefore" is at B1 on the CEFR scale.