Cool MateSwear vs Vow
When to use each in English, with meaning, register, and examples.
Swear
InformalTop 2,000 (common)B2verb
Vow
FormalTop 3,000 (common)C1verb
Most formal: VowMost common: Swear
| Swear | Vow | |
|---|---|---|
| Pronunciation | 🇬🇧 /["/sweə(r)/","/sweəz/","/swɔː(r)/","/swɔːn/","/ˈsweərɪŋ/"]/🇺🇸 /["/swer/","/swerz/","/swɔːr/","/swɔːrn/","/ˈswerɪŋ/"]/ | 🇬🇧 /["/vaʊ/","/vaʊz/","/vaʊd/","/ˈvaʊɪŋ/"]/🇺🇸 /["/vaʊ/","/vaʊz/","/vaʊd/","/ˈvaʊɪŋ/"]/ |
| Meaning | To use rude or offensive words. | A serious promise to do something. |
| Example | I swear to tell the truth in my testimony. | She vowed never to speak to him again. |
| Register | Informal | Formal |
| How common | Top 2,000 (common) | Top 3,000 (common) |
| CEFR level | B2 | C1 |
| Part of speech | verb | verb |
| Collocations | loudly, quietly, silently, hear somebody, at, solemnly, on oath, under oath, be prepared to, make somebody, by, on, to, be sworn into office, swear somebody to secrecy, swear somebody to silence, solemnly, on oath, under oath, be prepared to, make somebody, by, on, to, be sworn into office, swear somebody to secrecy, swear somebody to silence, solemnly, on oath, under oath, be prepared to, make somebody, by, on, to, be sworn into office, swear somebody to secrecy, swear somebody to silence, solemnly, on oath, under oath, be prepared to, make somebody, by, on, to, be sworn into office, swear somebody to secrecy, swear somebody to silence | quietly, silently, to, vow never to do something, vow revenge, vow revenge against somebody |
| Antonyms | praise, compliment | break, violate |
| Common mistakes | Confusing 'swear' with 'promise' — they have different meanings., Using it in formal writing where it's not acceptable., Using 'swear to' instead of 'swear at' when expressing anger. | 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 settings to express anger or frustration. Often considered inappropriate in formal contexts. Be cautious of the audience and setting before using. | Use 'vow' when making a serious commitment, often in formal situations like weddings or ceremonies. Avoid in casual conversations. |
Frequently asked questions: Swear vs Vow
What's the difference between Swear and Vow?
Swear: To use rude or offensive words. Vow: A serious promise to do something.
Which is more formal: Swear and Vow?
Vow is the most formal of these.
Which is more common: Swear and Vow?
Swear is the most common in everyday English.
Which is more advanced: Swear and Vow?
Vow is the highest level, at C1, on the CEFR scale.
Are Swear and Vow the same CEFR level?
Swear: B2, Vow: C1 on the CEFR scale.
What part of speech are Swear and Vow?
Swear: verb, Vow: verb.
Can you show an example of each?
Swear: I swear to tell the truth in my testimony. Vow: She vowed never to speak to him again.
Can I use Swear and Vow interchangeably?
Not always. Swear 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.