If you want to call someone foolish while sounding smart yourself, the adjective asinine is your go-to word.

Asinine derives from the Latin asinus. Guess what that means? Bonus: Asinine takes stupid up a notch. There's someone so delightful in the double-edged quality of asinine behavior. Talking trash about your boss is stupid. Talking trash about your boss in an email they're cc'd on...that's asinine.

Definitions of asinine

adj devoid of intelligence

fatuous, inane, mindless, vacuous
devoid of good sense or judgment

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, can put you on the path to systematic vocabulary improvement.