err err /ˈɝː/

verb

1. () To make a mistake or be incorrect  ( mistake , slip , err )
   to make a mistake or be incorrect
     I apologize for any mistakes I may have made. I didn't mean to err.
   I apologize for any mistakes I may have made. I didn't mean to err.
   
2. () Wander from a direct course or at random  ( err , stray , drift )
   wander from a direct course or at random
    The child strayed from the path and her parents lost sight of her
   The child strayed from the path and her parents lost sight of her
    Don't drift from the set course
   don't drift from the set course