informer

About 0.68 uses per million words.

Meaning

1. noun One who informs someone else about something.
2. noun A person who tells authorities about improper or illegal activity.

   Being an informer often meant living in fear.

3. noun One who informs, animates, or inspires.

Similar words

betrayer squealer rat whistle-blower snitch informant whistleblower traitor insider spy

Often followed by

and was in is who to or for against

Word family

informers