1. ignore wrongdoing
be willing to look the other way
This expression is generally used when the person doing the ignoring has a responsibility to report on wrongdoing or to enforce a set of laws or rules but chooses not to. You can willingly 'look the other way' out of a sense of justice, indifference, or if the transgressor is a friend or relation, but people also do so less willingly out of fear. It can be used in a social or professional context but is more common in the latter.