sleuth:
(plural: ‘sleuths‘; for the right pronunciation of this word, please click here)
a person who follows somebody or something secretly in order to find out some secret information;
a detective;
a secret agent,
Sherlock Holmes, the lead character in the mystery novels by Sir Arthur Canon Doyle, is the best sleuth who can track any criminal and solve the mystery with his imaginative power.
Every police depart has a special squad of sleuths which works secretly to find out high profile criminals and bring to justice.
There are non-professional sleuths, the ordinary people with some knowledge in science, crimes and electronics, who help the professional sleuths, the FBI agents, for example, in investigating some criminal cases and mysteries just for fun or out of curiosity, and there are also social media sleuths, ordinary people feeling social responsibility, who give out important information about criminals or offenders, which helps the law agents apprehend those criminals or offenders.
Note 2: ‘Sleuth’ is the collective noun/group name for bears; e.g. a sleuth of bears.
Note 2: ‘Sleuth’ is found in the computer terminology for some electronic tracking system. For an article about ‘sleuth’ in this context, please click here.


