The meaning of UNDERMINE is to subvert or weaken insidiously or secretly. How to use undermine in a sentence. Synonym Discussion of Undermine.

UNDERMINE definition: 1. to make someone less confident, less powerful, or less likely to succeed, or to make something…. Learn more.

UNDERMINE definition: to injure or destroy by insidious activity or imperceptible stages, sometimes tending toward a sudden dramatic effect. See examples of undermine used in a sentence.

Find 86 different ways to say UNDERMINE, along with antonyms, related words, and example sentences at Thesaurus.com.

1. To weaken by wearing away a base or foundation: Water has undermined the stone foundations. 2. To weaken, injure, or impair, often by degrees or imperceptibly; sap: Late hours can undermine one's …

Definition of undermine verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you undermine something such as a feeling or a system, you make it less strong or less secure than it was before, often by a gradual process or by repeated efforts.

To undermine literally means to dig a hole underneath something, making it likely to collapse. But we more often use the word to describe sabotage or the act of weakening someone else's efforts.

There are three meanings listed in OED's entry for the noun undermine, two of which are labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Find 3,254 synonyms for undermine and other similar words that you can use instead based on 20 separate contexts from our thesaurus.