Words similar to dumb

Example sentences for: dumb

How can you use “dumb” in a sentence? Here are some example sentences to help you improve your vocabulary:

Jar Jar is likable, easygoing, and dumb as dirt--always being scolded or saved from death by the Jedi knights.
The sequence I detailed was from the middle of the picture, occupied about 10 minutes of screen time, and was evoked because it illustrated De Palma's film syntax better than the usual dumb adjectives.
Isn't that dumb?
(In the novel, a headmaster actually refers to the hero and his friend as "Dumb and Dumber."
The article wonders if this was the result of dumb luck or devious engineering.