Idiom Definition:
Your browser does not support the audio element.
"to get to the bottom of something"
to investigate and thereby discover the basic underlying meaning or purpose or reason for something
Synonyms:
appreciate, apprehend, catch, clarify, comprehend, crack, decipher, decode, divine, fathom, find, figure, get, grasp, have, hit, interpret, know, penetrate, perceive, puzzle, reason, recognize, savvy, unlock, unravel, untangle, work