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undermine

/ˌʌn.dɚˈmaɪn/ verb C1
  1. To dig underneath (something), to make a passage for destructive or military purposes; to sap.
  2. To weaken or work against; to hinder, sabotage. (figuratively) · The war efforts were undermined by the constant bickering between the allies.
  3. To erode the base or foundation of something, e.g. by the action of water.
  4. To regard an object as the sum of the parts that compose it, in object-oriented ontology.

He/she/it undermines · Past undermined · Past participle undermined · -ing form undermining

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Verb forms

Base form
undermine
He/she/it
undermines
Past
undermined
Past participle
undermined
-ing form
undermining

From the library

To undermine the ground for fifty feet—to devote three years to a labor which, if successful, would conduct you to a precipice overhanging the sea—to plunge into the waves from the height of fifty, sixty, perhaps a hundred feet, at the risk of being dashed to pieces against the rocks, should you have been fortunate enough to have escaped the fire of the sentinels; and even, supposing all these perils past, then to have to swim for your life a distance of at least three miles ere you could reach the shore—were difficulties so startling and formidable that Dantès had never even dreamed of such a scheme, resigning himself rather to death.
The Count of Monte Cristo, p. 147 · C1
This digital retreat severely undermines the original goal of cultivating a dynamic, interactive workplace culture.
The Trouble with Open-Plan Offices, p. 1 · C1

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Words, meanings, pronunciations and translations from Wiktionary (CC BY-SA 4.0); how common each word is from wordfreq. Made into this dictionary by FluentPlex.