DictionarygagaExtreme enthusiasm
adjective

gaga

GAH-gah/ˈɡɑːɡɑː/

Unable to think clearly or sensibly.

She seems gaga over the puppy, oblivious to her companion's amusement.

A young woman is comically enthralled by a tiny puppy, clasping her hands beneath her chin and leaning forward with an enormous delighted smile.
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

Old Time Radio Researchers1:47
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
Jack Benny - JB 1938-11-20 Too Hot To Handle

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

Similar words

confused
Confused emphasizes difficulty understanding rather than generally foolish thinking.
dazed
Dazed suggests temporary mental fog caused by shock or exhaustion.
foolish
Foolish stresses poor judgment, not necessarily difficulty thinking clearly.