Don't blaspheme vs Swear

When to use each in English, with meaning, register, and examples.

Don't blaspheme

FormalBeyond 10,000 (less common)

Swear

InformalTop 2,000 (common)B2verb
Most formal: Don't blasphemeMost common: Swear
 Don't blasphemeSwear
Pronunciation🇬🇧 //blæsˈfiːm//🇺🇸 //blæsˈfim//🇬🇧 /["/sweə(r)/","/sweəz/","/swɔː(r)/","/swɔːn/","/ˈsweərɪŋ/"]/🇺🇸 /["/swer/","/swerz/","/swɔːr/","/swɔːrn/","/ˈswerɪŋ/"]/
MeaningDon't say bad or disrespectful things about God or religion.To use rude or offensive words.
ExampleThe priest warned the congregation, 'Don't blaspheme; respect your beliefs.'I swear to tell the truth in my testimony.
RegisterFormalInformal
How commonBeyond 10,000 (less common)Top 2,000 (common)
CEFR level-B2
Part of speechverb
Collocationsblaspheme against God, blaspheme in church, blaspheme publiclyloudly, 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
Antonyms-praise, compliment
Common mistakesUsing 'blaspheme' incorrectly as a general term for cursing., Confusing with 'blasphemy,' the noun form., Overusing in non-religious contexts.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.
Usage notesUsed in religious contexts. Can be seen as strong or serious. Not often used in casual conversation.Used in informal settings to express anger or frustration. Often considered inappropriate in formal contexts. Be cautious of the audience and setting before using.

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Don't blaspheme
Swear

Frequently asked questions: Don't blaspheme vs Swear

What's the difference between Don't blaspheme and Swear?

Don't blaspheme: Don't say bad or disrespectful things about God or religion. Swear: To use rude or offensive words.

Which is more formal: Don't blaspheme and Swear?

Don't blaspheme is the most formal of these.

Which is more common: Don't blaspheme and Swear?

Swear is the most common in everyday English.

Can you show an example of each?

Don't blaspheme: The priest warned the congregation, 'Don't blaspheme; respect your beliefs.' Swear: I swear to tell the truth in my testimony.

Can I use Don't blaspheme and Swear interchangeably?

Not always. Don't blaspheme and Swear 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.

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