fault

[ fawlt ]
/ fɔlt /

noun

verb (used without object)

to commit a fault; blunder; err.
Geology. to undergo faulting.

verb (used with object)

Geology. to cause a fault in.
to find fault with, blame, or censure.

Idioms for fault

Origin of fault

1250–1300; Middle English faute < Anglo-French, Middle French < Vulgar Latin *fallita, noun use of feminine of *fallitus, for Latin falsus, past participle of fallere to be wrong

SYNONYMS FOR fault

1 blemish; frailty, shortcoming. Fault, failing, foible, weakness, vice imply shortcomings or imperfections in a person. Fault is the common word used to refer to any of the average shortcomings of a person; when it is used, condemnation is not necessarily implied: Of his many faults the greatest is vanity. Foible, failing, weakness all tend to excuse the person referred to. Of these foible is the mildest, suggesting a weak point that is slight and often amusing, manifesting itself in eccentricity rather than in wrongdoing: the foibles of artists. Weakness suggests that the person in question is unable to control a particular impulse, and gives way to self-indulgence: a weakness for pretty women. Failing is closely akin to fault, except that it is particularly applied to humanity at large, suggesting common, often venial, shortcomings: Procrastination and making excuses are common failings. Vice (which may also apply to a sin in itself, apart from a person: the vice of gambling ) is the strongest term, and designates a habit that is truly detrimental or evil.

OTHER WORDS FROM fault

post·fault, noun

British Dictionary definitions for at fault

fault
/ (fɔːlt) /

noun

verb

Word Origin for fault

C13: from Old French faute, from Vulgar Latin fallita (unattested), ultimately from Latin fallere to fail

Scientific definitions for at fault

fault
[ fôlt ]

A fracture in a rock formation along which there has been movement of the blocks of rock on either side of the plane of fracture. Faults are caused by plate-tectonic forces. See more at normal fault reverse fault strike-slip fault thrust fault transform fault. See Note at earthquake.

A Closer Look

Bedrock, the solid rock just below the soil, is often cracked along surfaces known as planes. Cracks can extend up to hundreds of kilometers in length. When tensional and compressional stresses cause rocks separated by a crack to move past each other, the crack is known as a fault. Faults can be horizontal, vertical, or oblique. The movement can occur in the sudden jerks known as earthquakes. Normal faults, or tensional faults, occur when the rocks above the fault plane move down relative to the rocks below it, pulling the rocks apart. Where there is compression and folding, such as in mountainous regions, the rocks above the plane move upward relative to the rocks below the plane; these are called reverse faults. Strike-slip faults occur when shearing stress causes rocks on either side of the crack to slide parallel to the fault plane between them. Transform faults are strike-slip faults in which the crack is part of a boundary between two tectonic plates. A well-known example is the San Andreas Fault in California. Geologists use sightings of displaced outcroppings to infer the presence of faults, and they study faults to learn the history of the forces that have acted on rocks.

Cultural definitions for at fault

fault

In geology, a place where sections of the crust of the Earth move relative to each other. (See earthquake and San Andreas fault.)

notes for fault

Faults tend to occur near the edges of tectonic plates.

Idioms and Phrases with at fault (1 of 2)

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.

Idioms and Phrases with at fault (2 of 2)

fault

see at fault; find fault; to a fault.