1. (

• erode ,
• gnaw ,
• gnaw_at ,
• eat_at ,
• wear_away

) become ground down or deteriorate; "Her confidence eroded" ;

2. (

• erode ,
• eat_away ,
• fret ,

) remove soil or rock; "Rain eroded the terraces" ;

1. (

• eroded ,
• scoured

) worn away as by water or ice or wind ;