Underhand often implies unethical or unfair behavior, invoking a sense of disapproval. His underhand approach to business angered many clients.
Pro Tip 2/3
Secrecy Element
When something is underhand, it's usually hidden from public view or done without openly admitting. They engaged in underhand negotiations to avoid attention.
Pro Tip 3/3
Subtle Nuances
Watch for nuanced differences; underhand actions might be legal but still frowned upon. The politician's underhand comments were technically within the rules.