undermine
1. [ verb ] destroy property or hinder normal operations
Synonyms: subvert weaken countermine counteract sabotage
Examples:

"The Resistance sabotaged railroad operations during the war"

Related terms: disobey derail sabotage
2. [ verb ] hollow out as if making a cave or opening
Synonyms: cave
Examples:

"The river was caving the banks"

Related terms: hollow sap
Similar spelling:   underline
  underarm
  underpin
  undermanned
  unadorned
  underdone
  undertone
  under_fire
  underwrite
  underprice
  underneath
  underwriter
  underrating
  undertaking
  underhanded
  underage
  underfed
  underfur
  undersea
  underlie
  underpart
  undergird
  underived
  underhung
  underhand
  underfelt
  Underdown
  underbred
  underling
  underseal
  underrate
  undertake
  underwing
  underwear
  undertide
  undersell
  underside
  undersign
  undersize
  undersoil
  undercurrent
  undergarment
  underperform
  undersurface
  undoer
  untier
  underskirt
  untermeyer
  underworld
  underbelly
  undersexed
  undercover
  undershirt
  underdress
  underlying
  under_arms
  underwater
  undertaker
  undershrub
  underpants
  underspent
  underspend
  undersized
  underframe
  undervalue
  underexpose
  undergo
  underweight
  underscore
  understate
  underseller
  under_wraps
  underquote
  undersealed