get at the bottom of (something)

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get at the bottom of (something)

1. To determine the cause or source of something. What is causing this water leak? Has anyone gotten at the bottom of it yet?
2. To solve the mystery of something. I have every confidence that our detectives will get at the bottom of this crime.
See also: bottom, get, of
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.