Synonyms/Hypernyms (Ordered by Estimated Frequency) of verb gnaw_at

1 sense of gnaw at

Sense 1
erode, gnaw, gnaw at, eat at, wear away -- (become ground down or deteriorate; "Her confidence eroded")
       => decay, crumble, dilapidate -- (fall into decay or ruin; "The unoccupied house started to decay")