What does undermined mean?
Undermined is the past tense and past participle of the verb undermine, meaning to weaken something by gradually reducing its strength, support, or effectiveness. The word is especially common in discussions of politics, organizations, relationships, and public trust: an event may undermine confidence, authority, stability, or credibility. It can also be used more literally to describe foundations or structures weakened by digging, erosion, or structural problems. Because the verb often implies indirect or gradual damage, “undermined” frequently suggests a serious and persistent threat rather than a temporary setback. As an adjective, it describes something that has been weakened in this way, as in “undermined authority” or “undermined support.” The word derives from the idea of digging beneath something, a physical action that metaphorically becomes a means of destroying its foundations.
Past tense and past participle of undermine: to weaken, damage, or make less secure, especially gradually or indirectly.
"The new evidence undermined the witness's account."
Common in formal contexts describing damage to confidence, authority, credibility, support, or stability.
Weakened, damaged, or rendered less secure, often by gradual or indirect means.
"The committee questioned the agency's undermined credibility."
Less common than the verb form, but natural in formal writing when a noun has been weakened or compromised.
To undermine something is to attack its foundations: literally, to dig beneath them, and figuratively, to weaken the support on which it rests.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Words that share this root
Related word forms
How undermined is actually used
The word is common in formal and professional contexts and usually carries a negative connotation. It often suggests damage that occurs gradually or indirectly rather than through an obvious, immediate action.