Adjective

The term deceitful refers to someone or something that is inclined to deceive, mislead or manipulate others through dishonest or fraudulent means. It involves intentionally or knowingly concealing, distorting or manipulating the truth in order to gain an advantage, deceive or trick someone. Deceitful behavior can be seen in many forms such as lying, fraud, forgery, impersonation, cheating, and misrepresentation of facts or intentions. Deceitful actions can cause harm or damage to individuals, groups, or society as a whole, and are generally considered unethical and immoral.

Example

1. The salesman's deceitful tactics convinced me to buy a product that didn't meet my needs.
2. Her deceitful behavior towards her colleagues ultimately led to her termination from the company.
3. I can't trust him anymore after discovering his deceitful nature and how he constantly lies to cover up his mistakes.