Undermine Meaning. 1 to make something or someone become gradually less effective confident or successful Business confidence was undermined by a series of major failures. To gradually make someone or something less strong or effective economic policies that threaten to undermine the health care system undermine somebodys.
Physical Geography of the sea wind etc to wear away the bottom or base of land cliffs etc 2. Weaken sabotage subvert compromise More Synonyms of undermine. To excavate the earth beneath.
To make someone or something weaker or less effective usually in a secret or gradual way She tried to undermine my authority by complaining about me to my boss.
To undermine literally means to dig a hole underneath something making it likely to collapse. To weaken or ruin by degrees. Form a mine under. Accidentally undermine the foundation of a house by digging a.
