Bastard vs Motherfucker

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

Bastard

VulgarTop 3,000 (common)

Motherfucker

VulgarTop 5,000 (fairly common)
Most common: Bastard
 BastardMotherfucker
Pronunciation🇬🇧 //ˈbɑːstəd//🇺🇸 //ˈbæstərd//🇬🇧 //ˈmʌðəˌfʌkə//🇺🇸 //ˈmʌðərˌfʌkər//
MeaningAn offensive term for someone born outside of marriage.An offensive term for a bad person or as an insult.
ExampleHe called him a nasty bastard after the argument.He called him a motherfucker for betraying his trust.
RegisterVulgarVulgar
How commonTop 3,000 (common)Top 5,000 (fairly common)
Collocationsbastard child, bastard son, bastardization, bastard of a person, call someone a bastardmotherfucker joke, motherfucker attitude, crazy motherfucker
Antonymslegitimate, genuine-
Common mistakesConfused with 'illegitimate child' - 'bastard' has a more severe connotation., Used in formal settings - avoid using it in polite conversations., Misunderstood as a neutral term - it's very derogatory.Used in formal settings, Misused as a compliment, Confused with similar but less intense insults
Usage notesOften used as an insult, can be informal; context matters as it can be very offensive.Use this word in informal situations and often among friends. It is very offensive and sarcastic. Avoid in formal contexts.

See it in real clips

Bastard
Motherfucker

Frequently asked questions: Bastard vs Motherfucker

What's the difference between Bastard and Motherfucker?

Bastard: An offensive term for someone born outside of marriage. Motherfucker: An offensive term for a bad person or as an insult.

Which is more common: Bastard and Motherfucker?

Bastard is the most common in everyday English.

Can you show an example of each?

Bastard: He called him a nasty bastard after the argument. Motherfucker: He called him a motherfucker for betraying his trust.

Can I use Bastard and Motherfucker interchangeably?

Not always. Bastard and Motherfucker 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.