Definitions for: Undermine

[v] hollow out as if making a cave or opening; "The river was caving the banks"
[v] destroy property or hinder normal operations; "The Resistance sabotaged railroad operations during the war"

Webster (1913) Definition: Un`der*mine", v. t.
1. To excavate the earth beneath, or the part of, especially
for the purpose of causing to fall or be overthrown; to
form a mine under; to sap; as, to undermine a wall.

A vast rock undermined from one end to the other,
and a highway running through it. --Addison.

2. Fig.: To remove the foundation or support of by
clandestine means; to ruin in an underhand way; as, to
undermine reputation; to undermine the constitution of the

He should be warned who are like to undermine him.

Synonyms: cave, counteract, countermine, sabotage, subvert, weaken

See Also: core out, derail, disobey, hollow, hollow out, sap

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