revealing (EN)
adjective

This word can also be a form of:
reveal (verb)

adjective “revealing”

revealing
  1. providing a lot of useful information
    The documentary was quite revealing, shedding light on issues that were previously unknown to the public.
  2. describing clothing that shows more of the body than is typical
    She chose not to wear the revealing dress to the family dinner, opting for something more conservative.