1. (

• informing ,
• ratting

) to furnish incriminating evidence to an officer of the law (usually in return for favors) ;

2. (

• informing ,
• making_known

) a speech act that conveys information ;

1. (

• inform

) impart knowledge of some fact, state of affairs, or event to; "I informed him of his rights" ;

2. (

• inform

) give character or essence to; "The principles that inform modern teaching" ;

3. (

• inform ,

) act as an informer; "She had informed on her own parents for years" ;