Synonyms: miscue, parapraxis, slip, slip-up
Definition: a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.
Similar words: mistake, error, fault
Definition: a wrong action attributable to bad judgment or ignorance or inattention
Usage: he made a bad mistake; she was quick to point out my errors; I could understand his English in spite of his grammatical faults