Question 1

What does "inform on" mean?

Accepted Answer

To secretly report someone's criminal or improper behavior to the authorities.

Question 2

How do you use "inform on" in a sentence?

Accepted Answer

He was arrested after a former partner informed on him to the police.

Question 3

Is "inform on" formal or informal?

Accepted Answer

"inform on" is register-neutral — appropriate in both casual and formal contexts. Carries a strong connotation of betrayal. Often used in criminal, political, or wartime contexts. The person who informs is sometimes called an 'informer' or 'informant'. Used in both British and American English.

inform on

更多含 "on" 的短语