Cool MateSwear to God vs Vow
When to use each in English, with meaning, register, and examples.
Swear to God
InformalTop 3,000 (common)
Vow
FormalTop 3,000 (common)C1verb
Most formal: Vow
| Swear to God | Vow | |
|---|---|---|
| Pronunciation | 🇬🇧 //swɛə tʊ ɡɒd//🇺🇸 //swɛr tə ɡɑd// | 🇬🇧 /["/vaʊ/","/vaʊz/","/vaʊd/","/ˈvaʊɪŋ/"]/🇺🇸 /["/vaʊ/","/vaʊz/","/vaʊd/","/ˈvaʊɪŋ/"]/ |
| Meaning | To promise seriously, often while making a strong statement. | A serious promise to do something. |
| Example | I swear to God, I didn’t take your book! | She vowed never to speak to him again. |
| Register | Informal | Formal |
| How common | Top 3,000 (common) | Top 3,000 (common) |
| CEFR level | - | C1 |
| Part of speech | verb | |
| Collocations | swear to God that, I swear to God, swear to God in court | quietly, silently, to, vow never to do something, vow revenge, vow revenge against somebody |
| Antonyms | - | break, violate |
| Common mistakes | Using it in a formal context., Confusing it with 'swear on the Bible' which has a religious connotation. | Confused with 'cow' — they sound similar but have different meanings., Using in informal contexts — 'vow' is too strong for casual promises. |
| Usage notes | Used in informal contexts to emphasize honesty or seriousness. Not suitable for formal writing or discussions. | Use 'vow' when making a serious commitment, often in formal situations like weddings or ceremonies. Avoid in casual conversations. |
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Frequently asked questions: Swear to God vs Vow
What's the difference between Swear to God and Vow?
Swear to God: To promise seriously, often while making a strong statement. Vow: A serious promise to do something.
Which is more formal: Swear to God and Vow?
Vow is the most formal of these.
Can you show an example of each?
Swear to God: I swear to God, I didn’t take your book! Vow: She vowed never to speak to him again.
Can I use Swear to God and Vow interchangeably?
Not always. Swear to God and Vow are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.