The word "unearths" means to dig up or unearth something that was hidden, buried or lost. Some synonyms for "unearths" include "exhume", "uncover", "discover", "reveal" and "retrieve". These words all convey the idea of bringing something to light that was previously hidden or buried. "Exhume" specifically refers to digging up a body from a grave or tomb. "Uncover" means to remove the cover or hiding place of something. "Discover" implies finding something that was previously unknown. "Retrieve" suggests recovering something that was lost or stolen. Regardless of which synonym is used, all convey a sense of revealing something that was unknown or hidden.