intransitive verb
Definition: To make a mistake or to be responsible for an error.
Example: He tends to fault when he is under pressure.
noun
Definition: A mistake or imperfection in someone's character or actions, or a defect in something.
Example: It was not her fault that the project failed; there were many factors involved.
transitive verb
Definition: To criticize or blame someone for a mistake or problem.
Example: She faulted him for not completing the project on time.