eat away
/it‿əˈweɪ/ verb- To physically corrode or erode (something) gradually. · The river bank had been eaten away over the years by the flood water.
- To destroy (something) gradually by an ongoing process.
- Chiefly followed by at: of a circumstance, incident, etc.: to cause (someone) to feel guilty, troubled, or worried; to bother (see eat away at). · The guilt of having lied was eating away at him.· Not confessing that I had stolen the money ate away at me until I could no longer sleep.
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