undermine

IPA: ˈʌndɝmaɪn

To dig underneath (something), to make a passage for destructive or military purposes; to sap.
(figuratively) To weaken or work against; to hinder, sabotage.
To erode the base or foundation of something, e.g. by the action of water.
(philosophy) To regard an object as the sum of the parts that compose it, in object-oriented ontology.

Examples of "undermine" in Sentences

These labels undermine consumer confidence in dairy products.
These type of extreme labels undermine any thought provoking discussions and reflect the authors lack of meaningful dialouge.
They have no respect for the Constitution because this power which they are trying to undermine, is specifically delegated to the President.
I’d bet he’d be able to help plot strategy for managing the UN, give the current lay of the SC & the GA, and advise on who to marginalize/coopt/undermine from the start.
To expand on that, Washington seems to think that helping Israel keep up non-nuclear appearances might make Israel less inclined to once again undermine the Israel-Palestine peace process.
Furthermore, some influential indigenous chiefs have joined the campaign against the charter arguing that the proposed reform of indigenous affairs and a common name undermine indigenous traditional authority and culture.
Has an ordinary man the courage to demand such sacrifices, and would not such efforts most certainly demoralise the Army, break up the bands of discipline, and, in short, undermine its military virtue, if firm reliance on the greatness and infallibility of the Commander did not compensate for all?