Definition of "informer" in Englisch

noun

1. One who informs someone else about something.

2. A person who tells authorities about improper or illegal activity.

   • Being an informer often meant living in fear.
   • The police relied on an informer to catch the gang.
   • He acted as an informer during the rebellion.

3. One who informs, animates, or inspires.

   • 1729, Alexander Pope, Prologue to Sophonisba (by James Thomson Nature, informer of the poet's art.