revealer
/riˈvɛlər/Definitions
1. noun
One that reveals or discloses information.
“The whistleblower was a revealer of corporate corruption.”
2. noun
A person or thing that reveals or brings to light a hidden or obscure quality.
“The artist’s latest installation was a revealer of the city’s urban decay.”
3. verb
To make known or disclose information.
“The report will reveal the company’s financial struggles.”