Definitions

1. adjective

having or showing a tendency to deceive, or to be dishonest or untrustworthy

“He was known to be a deceitful salesman, always looking for ways to cheat his customers.”

2. noun

the state or quality of being deceitful

“The politician’s deceitful nature was exposed by the media, and it damaged her reputation forever.”

3. adverb

in a deceitful manner

“She handled the situation deceitfully, trying to shift the blame onto someone else.”