A defect; something that detracts from perfection. / A mistake or error. / A weakness of character; a failing.

(transitive) To criticize, blame or find fault with something or someone. / (intransitive, geology) To fracture. / (intransitive) To commit a mistake or error.

plural of fault

Third-person singular simple present indicative form of fault

(idiomatic) To an excessive degree; extremely.

present participle of fault

Formation of a geological fault.

(law, of vehicle insurance) In which a claimant is compensated for actual economic loss without blame being assigned to a particular party.

simple past tense and past participle of fault

at fault (in adjectival contexts)