[ in-fawr-mer ]
/ ɪnˈfɔr mər /


a person who informs against another, especially for money or other reward.
a person who informs or communicates information or news; informant.

Origin of informer

Middle English word dating back to 1350–1400; see origin at inform1, -er1

Can be confused

informant informer Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for informer

British Dictionary definitions for informer


/ (ɪnˈfɔːmə) /


a person who informs against someone, esp a criminal
a person who provides informationhe was the President's financial informer
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012