gaga

Definition of Gaga in English :

mentally or physically infirm with age

Example Sentences:
'his mother was doddering and frail'

2. crazy, dotty, gaga, wild

intensely enthusiastic about or preoccupied with

Example Sentences:
'crazy about cars and racing'
'he is potty about her'

WordNet Lexical Database for English. Princeton University. 2010.

Gaga

adjective informal

1.

senile; doting

2.

slightly crazy

adjective Slang

1.

mentally confused; crazy

2.

carried away as by love or enthusiasm

adj.
Informal

1. Silly; crazy.

2. Completely absorbed, infatuated, or excited: They were gaga over the rock group's new album.

3. Senile; doddering.