dim-witted

adjective
UK /ˌdɪmˈwɪtɪd/
US /ˌdɪmˈwɪtɪd/

Not smart or quick to understand things.

The dim-witted character in the story kept forgetting where he put his hat.


OTHER MEANINGS

2. Lacking sharpness of mind; slow to learn or grasp ideas.

His dim-witted reply showed he hadn't understood the question.

3. Showing a lack of good judgment or common sense.

It was a dim-witted plan to go hiking without a map.

4. Informal: foolish in a harmless or comic way.

The dim-witted dog chased its own tail for an hour.