blameworthily
Definitions
In a manner that deserves blame or censure.
In a way that is culpable or responsible for a fault or wrong.
Examples
The manager acted blameworthily by ignoring the safety protocols that led to the accident.
He behaved blameworthily when he knowingly spread false information to damage his colleague's reputation.
Synonyms
culpably reprehensibly guiltily condemnably wrongfully reproachfully
Antonyms
innocently blamelessly faultlessly virtuously praiseworthily commendably