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.
Words nearby at fault
How to use at fault in a sentence
For a few minutes it seemed like old times, a return to the clearer fault-lines of the Cold War.
I spoke first with Scott Ellman, a student at Wesleyan University and now the Huffington Post editor-at-large for his campus.
Race is the San Andreas Fault of our culture as well as our history.The Wildly Peaceful, Human, Almost Boring, Ultimately Great New York City Protests for Eric Garner|Mike Barnicle|December 8, 2014|DAILY BEAST
The at-home genetics testing company 23andme, established in 2006, helps people learn more about their “DNA relatives.”
This at-home blood test kit gives a full reading of antioxidant, fatty acid, or vitamin panels.
You never cared—you were too proud to care; and when I spoke to you about my fault, you did n't even know what I meant.Confidence|Henry James
De Robeck agrees that we don't know enough yet to warrant us in fault-finding or intervention.Gallipoli Diary, Volume I|Ian Hamilton
Tressan was monstrous ill-at-ease, and his face lost a good deal of its habitual plethora of colour.
At other times they have a dreadful look of being fibs invented for the purpose of covering a fault.Children's Ways|James Sully
A fellow rudely clad—a hybrid between man-at-arms and lackey—lounged on a musket to confront them in the gateway.