Feeble-minded a. : Weak in intellectual power; wanting firmness or constancy; irresolute; vacilating; imbecile.

Example:
Who makes your top five Feeble-minded national pundits list?

Taxonomy
feeble-minded, free encyclopedia, grades, feeble-mindedness, Vineland Training School, search, the 19th century, early 20th century, loose description, mental deficiencies, former Prime Minister, pedant, office, psychiatric label, The American, Henry H. Goddard, creator, Backward.

Defination from the web:
feeble-minded is documented in use as early the 19th century through to the early 20th century as a loose description of a variety of ... A Times Editorial of November 1834 describes the long serving former Prime Minister Lord Liverpool as a feeble-minded pedant of office. ...