Dim-bulb

In Snow White [and the Seven Dwarfs], [Walt] Disney and his staff met the challenge of creating believable characters. Each of the seven dwarfs, from sober-sided Doc to dim-bulb Dopey, had a distinct personality.

Up to now the guy's just a dim-bulb character who likes to dress up in a sailor suit and spoon creme broolay out of a bowl for a living.

Well, long ago, a man named Aesop met a whole bunch of bossy, silly, funny, annoying, dim-bulb people, and he wanted to do something about it. He decided to write stories about these people, and end each story with a lesson […]

It’s harder to care about someone dying when you actively want them to disappear from the screen. And when the film itself proceeds so straightforwardly, and you know that even [Jennifer Love] Hewitt’s dim-bulb boyfriend (Freddie Prinze Jr.) will survive, much of the fun is lost.