One of the mysteries of the English language finally explained.
1Erode the base or foundation of (a rock formation)
erode, wear away, eat away at, chip away, undercutView synonyms
- ‘The lighthouse stands on a plinth of rock undermined by caves, perhaps once used by smugglers.’
- 1.1 Dig or excavate beneath (a building or fortification) so as to make it collapse.
tunnel under, dig under, burrow under, excavate, sapView synonyms
- ‘Within days, the French advanced into the city outskirts and undermined numerous buildings.’
- ‘The disaster was caused by the total collapse of his house in the Rue d' Anjou, undermined by the excavations carried out by the bank next door for its strong room.’
- ‘The Romans also developed tunnelling for military purposes, either by breaking through behind enemy defences or by undermining fortifications to cause their collapse.’
2Damage or weaken (someone or something), especially gradually or insidiously.‘this could undermine years of hard work’
subvert, sabotage, threaten, weaken, compromise, diminish, reduce, impair, mar, spoil, ruin, impede, hinder, damage, hurt, injure, cripple, disable, enfeeble, sap, shakeView synonyms
- ‘Foreign debt undermines the country's ability to act independently.’
- ‘Damage to the brain's left side often undermines language abilities.’
- ‘Those who undersleep are undermining their cognitive abilities - whether meagre or not - as well as their private life and health.’
- ‘I think all this niceness undermines our power.’
- ‘That law undermined the power of local authorities.’
- ‘Our central argument with the producers is that their ‘new’ work practices are undermining our ability to do our trade.’
- ‘What they don't understand is that being boring limits their power and undermines their effectiveness.’
- ‘This compromise has clearly undermined the church's ability to present the gospel with power and authority.’
- ‘They might have to share power and that is dangerous because it would undermine their position of power.’
- ‘And yet, the way he handled the events that followed gradually undermined his position.’
- ‘And it is this influence which is understandably resented by many, who see it as insidiously undermining our own culture.’
- ‘Their mental impairments may have also seriously undermined their ability to assist in their legal defense.’
- ‘Abusing the student programs in this way not only undermines the power of the union, but students are also being asked to do jobs for which they are not trained, raising concerns about health and safety.’
- ‘Mistakes or excessive collateral damage can undermine its potential effectiveness.’
- ‘Nation states will not be interested in enabling that power, only in undermining it.’
- ‘And so, while she was demanding great things of us, she was also, in a way, undermining our ability to fulfill them.’
- ‘Many in positions of power undermine others and the organization to meet their own selfish needs.’
- ‘That undermined the hard power strategy of the country in a very concrete way.’
- ‘It undermines their ability to do their job and sets a bad example to the rest of the company.’
- ‘It also undermines their ability their ability to trade in the peak Christmas season.’
Middle English: from under- + the verb mine, probably suggested by Middle Dutch ondermineren.
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