Prosecute vs Sue

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

Prosecute

FormalTop 3,000 (common)C1verb

Sue

Beyond 10,000 (less common)C1verb
Most formal: ProsecuteMost common: Prosecute
 ProsecuteSue
Pronunciation🇬🇧 //ˈprɒsɪkjuːt//🇺🇸 //ˈprɔːsɪkjuːt//🇬🇧 /["/suː/","/suːz/","/suːd/","/ˈsuːɪŋ/"]/🇺🇸 /["/suː/","/suːz/","/suːd/","/ˈsuːɪŋ/"]/
MeaningTo take legal action against someone for a crime.To take a person to court to solve a problem or get money.
ExampleThe state decided to prosecute the accused for the serious crime committed.They threatened to sue if the work was not completed.
RegisterFormalNeutral
How commonTop 3,000 (common)Beyond 10,000 (less common)
CEFR levelC1C1
Part of speechverbverb
Collocationsprosecute a case, prosecute someone, prosecute to the full extent of the lawsuccessfully, unsuccessfully, promptly, be able to, be entitled to, have the right to, for, over, successfully, unsuccessfully, promptly, be able to, be entitled to, have the right to, for, over
Antonymsexonerate, releasedefend, ignore, abstain
Common mistakesConfused with 'persecute', which means to oppress or harass., Using 'prosecute' in non-legal contexts where 'charge' might be more appropriate.Confused with 'pursue' as in to chase someone., Using it incorrectly as a transitive verb without an object, e.g., 'I will sue.' needs a direct object., Confusion between 'sue' and 'sue for' in context of specific damages or rights.
Usage notesUsed primarily in legal contexts. Commonly used in formal discussions about law enforcement and courtroom procedures.Used in legal contexts. More common in formal situations. Avoid in casual conversation unless discussing legal matters.

Frequently asked questions: Prosecute vs Sue

What's the difference between Prosecute and Sue?

Prosecute: To take legal action against someone for a crime. Sue: To take a person to court to solve a problem or get money.

Which is more formal: Prosecute and Sue?

Prosecute is the most formal of these.

Which is more common: Prosecute and Sue?

Prosecute is the most common in everyday English.

Are Prosecute and Sue the same CEFR level?

Prosecute: C1, Sue: C1 on the CEFR scale.

Can I use Prosecute and Sue interchangeably?

Not always. Prosecute and Sue 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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