WordNet (r) 3.0 (2006):
root out v 1: pull up by or as if by the roots; "uproot the vine that has spread all over the garden" [syn: uproot, extirpate, deracinate, root out] 2: destroy completely, as if down to the roots; "the vestiges of political democracy were soon uprooted" "root out corruption" [syn: uproot, eradicate, extirpate, root out, exterminate]