peel the onion

peel the onion

To expose the different various layers of something. Once the investigator started peeling the onion, he discovered just how many illegal operations the organization was involved in. You need to peel back the onion and find out what's really bothering Gina, because I doubt it's just the fact that you were late.
See also: onion, peel
Farlex Dictionary of Idioms.
See also:
  • peel away
  • peeling
  • peel back
  • peel off from (someone or something)
  • blow the lid off
  • blow the lid off (something)
  • blow the lid off something
  • lift
  • taint
  • be tainted by (something)