fault
fault
noun
An undesirable imperfection or defect in an object or person.
"The machine developed a fault."
verb
To find an imperfection or criticise someone or something.
"I can't fault his dedication."
noun
Responsibility for an error, mistake, or undesirable situation.
"It was entirely my fault."
Thesaurus
Synonyms: demerit, flaw, defect, blame, mistake, error, shift, faulting, fracture, geological fault, break