noun
plural faults
[count] a bad quality or part of someone's character :a weakness in character
a problem or bad part that prevents something from being perfect :a flaw or defect
[noncount] :responsibility for a problem, mistake, bad situation, etc.
[count] tennis :a mistake that results in a bad serve
[count] geology :a break in the Earth's crust
at fault
deserving blame for something bad :responsible
find fault
to a fault
to a great or excessive degree
verb
faults; faulted; faulting
[+ obj] to criticize (something)
to blame or criticize (someone)