adjective
gaga
GAH-gah/ˈɡɑːɡɑː/
Unable to think clearly or sensibly.
She seems gaga over the puppy, oblivious to her companion's amusement.

Etymology
French gaga, meaning “senile, foolish,” is probably the source of the English adjective. The French word itself probably imitates meaningless babbling, linking its sound with the idea of mental confusion.
In context
got enough trouble taking track of my hillbillies oh I know where Jack is he's in the next room talking to Barbara Whitney on the telephone oh boy is he gaga about her
More examples
- The fever leaves him a bit gaga and unable to follow the conversation.
- You must be gaga if you think that broken ladder is safe.
- By the end of the double shift, everyone is a little gaga.
Forms
gaga