ferret out

1. Uncover and bring to light by searching, as in Sandy was a superb reporter, tireless in ferreting out whatever facts were needed for her story. This expression alludes to hunting with ferrets, weasel-like animals formerly used to drive rabbits out of their burrows. [c. 1600]

Related Words

• ascertain 
• bring to light 
• drive out www.thesaurus.com
• get at 
• sniff out 
• uncover 
• unearth