S: (n) slip, slip-up, miscue, parapraxis (a minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc.)
S: (n) mistake, error, fault (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"
S: (n) slip, trip (an accidental misstep threatening (or causing) a fall) "he blamed his slip on the ice"; "the jolt caused many slips and a few spills"