Show Definitions
Whistle-blower
noun – A person who provides information about another's wrongdoing.
Usage example: there are laws to protect whistle-blowers who reveal corporate malfeasance
Spy and
whistle-blower are semantically related in
traitor topic. You can use "Spy" instead a
noun phrase "Whistle-blower", if it concerns topics such as person who is disloyal, informer to police.