Unscrupulous carries a strong negative judgment, implying a lack of ethics in behavior or decisions. The unscrupulous CEO faced public outrage for exploiting workers.
Pro Tip 2/3
Severity of Behavior
Used to describe extreme lack of moral principles, more than just casual dishonesty. Unscrupulous politicians may rig elections to stay in power.
Pro Tip 3/3
Not Just Lies
Unscrupulous goes beyond lying; it encompasses any dishonest or unethical action. After selling the untested medicine, the unscrupulous pharmacist disappeared.