GNAW

v. 1 chew, nibble, eat, bite, champ The marks were made by deer gnawing the bark 2 erode, eat away, corrode, wear down or away, fret, consume, devour The acid continues to gnaw away at the metal till it is gone 3 fret, irritate, harry, hector, pester, worry, bother, plague, trouble, torment, torture, distress, badger, harass, haunt, nag, vex, gall, nettle, irk, peeve, annoy The feeling that something was very wrong continued to gnaw at her