erroneously
/ɪˈrəʊnɪəsli/adverbIn a mistaken way; incorrectly: he was erroneously reported dead some erroneously believe the law will protect them...- A bank erroneously credited its customer's account twice with the amount of a single remittance.
- California tax returns for open years should be amended to claim refunds for the taxes erroneously paid on those earnings.
- One of the most unpropitious decisions a performing arts company can erroneously make is to stage a production in an ill-suited venue.