| 1. | a defect or imperfection; flaw; failing: a fault in the brakes; a fault in one's character. |
| 2. | responsibility for failure or a wrongful act: It is my fault that we have not finished. |
| 3. | an error or mistake: a fault in addition. |
| 4. | a misdeed or transgression: to confess one's faults. |
| 5. | Sports. (in tennis, handball, etc.)
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| 6. | Geology, Mining. a break in the continuity of a body of rock or of a vein, with dislocation along the plane of the fracture (fault plane). |
| 7. | Manège. (of a horse jumping in a show) any of a number of improper executions in negotiating a jump, as a tick, knockdown, refusal, or run-out. |
| 8. | Electricity. a partial or total local failure in the insulation or continuity of a conductor or in the functioning of an electric system. |
| 9. | Hunting. a break in the line of scent; a losing of the scent; check. |
| 10. | Obsolete. lack; want. |
| 11. | to commit a fault; blunder; err. |
| 12. | Geology. to undergo faulting. |
| 13. | Geology. to cause a fault in. |
| 14. | to find fault with, blame, or censure. |
| 15. | at fault,
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| 16. | find fault, to seek and make known defects or flaws; complain; criticize: He constantly found fault with my behavior. |
| 17. | to a fault, to an extreme degree; excessively: She was generous to a fault. |

fault (fôlt) ![]() (click for larger image in new window) n.
v. tr.
[Middle English faulte, from Old French, from Vulgar Latin *fallita, from variant of Latin falsa, feminine past participle of fallere, to deceive, fail.] |
In geology, a place where sections of the crust of the Earth move relative to each other. (See earthquake and San Andreas fault.)
Note: Faults tend to occur near the edges of tectonic plates.
at fault
Responsible for a mistake, trouble, or failure; deserving blame. For example, At least three cars were involved in the accident, so it was hard to determine which driver was at fault, or He kept missing the target and wondered if the sight on his new rifle was at fault. In Britain this usage was formerly considered incorrect but is now acceptable; in America it has been widespread since the mid-1800s. Also see in the wrong.