Foolish, crazy; exhibiting mental impairment; spec. having one's mental faculties impaired by old age.

Foolish, stupid; (also) of impaired intellect or understanding in old age.

attributive. depreciative. Foolish, stupid. Obsolete.

Foolish, stupid; (also) of impaired intellect or understanding in old age.

Having diminished mental faculties, esp. as a result of old age; confused, muddled. Also: physically debilitated by old age; infirm, decrepit.

Impaired in intellect or awareness; confused, stupefied. Also: characterized by a decline in mental (or physical) faculties, esp. in old age.

Having diminished mental or physical faculties as a result of old age.

Doting, exhibiting senile decay; mad, ‘dotty’; fatuous. Also as adv.