an unattractive or unsatisfactory feature, especially in a piece of work or in a person's character

my worst fault is impatience

responsibility for an accident or misfortune

if books were not selling, it wasn't the fault of the publishers

it was his fault she had died

an extended break in a rock formation, marked by the relative displacement and discontinuity of strata on either side of a particular plane

a landscape broken by numerous faults

the fault plane dips northwards

criticize for inadequacy or mistakes

her superiors could not fault her dedication to the job

you cannot fault him for the professionalism of his approach

(of a rock formation) be broken by a fault or faults

the continental crust has been thinned and faulted as a result of geological processes