
Feet of clay describes a serious weakness or flaw in someone who seems strong, impressive, or admirable. The phrase usually suggests a vulnerability that can undermine the whole person, reputation, or system.
It comes from the Bible, specifically Daniel 2. In the story, King Nebuchadnezzar dreams of a huge statue made from different materials. Its feet are made partly of iron and partly of clay. Although the statue looks powerful, its base is weak. When struck, it collapses because its foundation cannot hold.
That image gave English a lasting metaphor: something can appear grand and solid, yet still fail because of a hidden structural weakness.
Today, the phrase is often used for admired people:
- A respected leader may have feet of clay if a private flaw damages public trust.
- A brilliant expert may have feet of clay if overconfidence leads to poor judgment.
The phrase is not usually about a small imperfection. It points to a weakness important enough to threaten the whole thing. That is why it often appears in writing about heroes, institutions, and reputations.

