adjective
fraudulent
FRAW-juh-luhnt/ˈfrɔːdʒələnt/
Using deliberate deception to gain an unfair advantage.
The fraudulent prize voucher carries a fake official-looking seal.

Etymology
Fraudulent describes something as characterized by deceit, matching the Latin adjective's sense of cheating or dishonesty. It marks an intention to mislead, rather than a mere error or inaccuracy.
In context
based on false information from fraudulent sources.
More examples
- Investigators uncovered fraudulent claims for reimbursement.
- The website made fraudulent promises about nonexistent prizes.
- She reported the fraudulent transaction to the bank.
Forms
fraudulent · more fraudulent · most fraudulent
fraud noun — deliberate deception for unfair gain