WordWeb Online

1. To furnish incriminating evidence to an officer of the law (usually in return for favours)
   - ratting
    
2. A speech act that conveys information
   - making known

1. Impart or communicate information or knowledge (to someone)
   "I informed him of his rights"
    
2. Give character or essence to
   "The principles that inform modern teaching"
    
3. Act as an informer
   "She had informed on her own parents for years"

Type of: alter, change, communicate, disclosure, intercommunicate, modify, revealing, revelation, speech act

Encyclopedia: Informing