The Collaborative International Dictionary
Addle-brain
Addle-brain \Ad"dle-brain`\, Addle-head \Ad"dle-head`\, Addle-pate \Ad"dle-pate\, n. A foolish or dull-witted fellow. [Colloq.]
Wiktionary
addle-brain
n. (context pejorative English) A foolish or dull-witted person.
Usage examples of "addle-brain".
Very likely it would settle his mind, and it won’t do for Salford to become addle-brained, you know!
I didn't mean to hurt your feelings, but please don't talk to me as if I were addle-brained, for I am not.
Do you mean to tell me Cortland took advantage of that addle-brained Barbara Ann, who died giving birth, and he deserted that baby?