Final answer:
The word 'unscrupulous' refers to a lack of moral or ethical principles, often resulting in deceitful or dishonest behavior.
Step-by-step explanation:
The word unscrupulous is used to describe someone who is not restrained by moral or ethical principles; they are likely to act in a selfish or unethical manner without concern for the consequences of their actions on others. An unscrupulous person may engage in deceitful, dishonest, or otherwise morally questionable behaviors to achieve their ends. For example, an unscrupulous businessperson might exploit their employees or deceive their customers to make more profit.