fraudulently

/ˈfrɔːdʒələntli/
adverb
  1. In a way that involves deception or cheating for personal gain.
    • The accountant fraudulently transferred company funds into her personal account.
    • They were selling fake designer bags, fraudulently pretending they were authentic.
    • He fraudulently claimed he had a college degree on his job application.
Antonyms