get to the root of the problem

get to the root of the problem

To find or ascertain the cause of a particular problem or issue. The plumber has gotten to the root of the problem, and it doesn’t sound too costly to fix, thank goodness.
See also: get, of, problem, root
References in periodicals archive ?
I had hoped you would get to the root of the problem and so judge whether a federation is the best alternative to a fully united one independent state with no borders and with equal rights for all its citizens thus leaving no exit for partition.