scoundrel
A dishonest person who often cheats or tricks others.
A scoundrel is a dishonest or untrustworthy person who behaves badly without feeling guilty about it. Unlike someone who makes a mistake or has a moment of weakness, a scoundrel regularly tricks, cheats, or takes advantage of others, often with a certain shameless charm.
In classic adventure stories, scoundrels are usually clever rogues who scheme and lie to get what they want. Han Solo from Star Wars starts out as a lovable scoundrel: a smuggler who breaks rules and looks out mainly for himself, though he eventually shows his better nature. Captain Hook in Peter Pan is a more villainous scoundrel: he plots against children and breaks every code of honor.
The word carries a playful tone compared to harsher terms like “criminal” or “villain.” You might call someone a scoundrel for sneaking extra cookies or fibbing about finishing their homework, showing you're annoyed but not truly angry. When adults call politicians or business leaders scoundrels, though, they mean something more serious: people who betray trust, break promises, or deceive others for personal gain.
Interestingly, scoundrels in stories often have more personality than purely evil villains. They might be selfish and dishonest, but they're usually clever enough to be interesting. Real-life scoundrels, however, leave behind broken trust and disappointed people, which makes their behavior far less entertaining than fiction suggests.