be in the wrong

be in the wrong

To have done something incorrect or inappropriate. The other driver was totally in the wrong—he hit me, after all! I was in the wrong to assume that you two had reconciled. I should have checked before inviting you both to the dinner party.
See also: wrong
Farlex Dictionary of Idioms.
See also:
  • in the wrong
  • in the wrong box
  • pinned
  • put a foot wrong
  • not put a foot wrong
  • not/never put/set a foot wrong
  • on the wrong scent
  • wrong scent, on the
  • What happened?
  • it's all gone Pete Tong