Daffy and Pinheaded

Daffy adjective - Showing or marked by a lack of good sense or judgment.

Pinheaded and daffy are semantically related. In some cases you can use "Pinheaded" instead an adjective "Daffy".

Pinheaded adjective - Not having or showing an ability to absorb ideas readily.

Daffy and pinheaded are semantically related. Sometimes you can use "Daffy" instead an adjective "Pinheaded".