unscrupulous
US /ʌnˈskruː.pjə.ləs/
UK /ʌnˈskruː.pjə.ləs/

1.
sin escrúpulos, inescrupuloso, deshonesto
having or showing no moral principles; not honest or fair
:
•
He was an unscrupulous businessman who cheated his partners.
Era un hombre de negocios sin escrúpulos que engañaba a sus socios.
•
The company engaged in unscrupulous marketing practices.
La empresa incurrió en prácticas de marketing sin escrúpulos.