error

a wrong action attributable to bad judgment or ignorance or inattention; "he made a bad mistake"; "she was quick to point out my errors"; "I could understand his English in spite of his grammatical faults"

inadvertent incorrectness

a misconception resulting from incorrect information

(baseball) a failure of a defensive player to make an out when normal play would have sufficed

departure from what is ethically acceptable

(computer science) the occurrence of an incorrect result produced by a computer

part of a statement that is not correct; "the book was full of errors"