Fault vs Mistakes

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

Fault

Top 1,000 (very common)B2noun

Mistakes

Top 1,000 (very common)
 FaultMistakes
Pronunciation🇬🇧 /["/fɔːlt/"]/🇺🇸 /["/fɔːlt/"]/🇬🇧 //mɪˈsteɪks//🇺🇸 //mɪˈsteɪks//
MeaningA mistake or a problem in something.Errors or things done wrong.
ExampleThe engineer quickly identified the fault in the electricity supply.He learned from his mistakes.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 1,000 (very common)
CEFR levelB2-
Part of speechnoun
Collocationsstupid, entire, lie with somebody, at fault, through somebody’s fault, without fault, be all somebody’s fault, be entirely somebody’s fault, be largely somebody’s fault, big, great, moral, have, be blind to, overlook, fault in, for all somebody’s faults, to a fault, major, minor, dangerous, have, develop, look for, occur, lie in something, fault in, fault with, for all its faults, double, foot, serve, earthquake, geological, line, scarp, systemmake a mistake, learn from mistakes, correct mistakes
Antonymsmerit, virtue, advantagecorrectness, accuracy, perfection
Common mistakesConfusing 'fault' with 'error' — 'fault' often implies blame., Using 'fault' inappropriately as a verb instead of a noun., Misplacing the article — 'the fault' vs. 'fault'.Confused with 'mistake' as a noun and 'mistakes' as a plural form., Used incorrectly with 'make' (e.g., 'make mistakes' not 'do mistakes').
Usage notesUse 'fault' in both formal and informal conversations when discussing blame or a defect. Avoid using it in overly casual contexts.Used in many contexts to refer to errors. Avoid in formal writing unless discussing specific errors academically.

See it in real clips

Fault
Mistakes

Frequently asked questions: Fault vs Mistakes

What's the difference between Fault and Mistakes?

Fault: A mistake or a problem in something. Mistakes: Errors or things done wrong.

Can you show an example of each?

Fault: The engineer quickly identified the fault in the electricity supply. Mistakes: He learned from his mistakes.

Can I use Fault and Mistakes interchangeably?

Not always. Fault and Mistakes 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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