RichThesaurus
have bats in one's belfry
vs
madden
have bats in one's belfry
verb
To be crazy or eccentric.
madden
verb
To make insane; to inflame with passion.
To make angry.
How often have the words
have bats in one's belfry
and
madden
occurred in a corpus of books?
(source:
Google Ngram Viewer
)