1. in a manner intended to mislead or trick someone; dishonestly

Examples

• He deceitfully claimed to have a degree he never earned.
• The company deceitfully advertised the product's benefits to consumers.
• She deceitfully promised to repay the loan but had no intention of doing so.
• The politician deceitfully presented false statistics to support his argument.
• He deceitfully concealed his true identity from his business partners.
• They deceitfully manipulated the evidence to win the case.