Definition of gaga in English:
Overexcited or irrational, typically as a result of infatuation or excessive enthusiasm; mentally confused; senile.
- To the hard-eyed realists of New Delhi, this book will only be a minor provocation from an old friend of India who has now gone slightly gaga.
- The U.S. media have gone slightly gaga about what's happening over there in Buckingham Palace.
- Certain challenges might currently be driving you bananas, but don't get overwhelmed, go gaga and give up - or be goaded into accepting the unacceptable for the sake of peace.
early 20th century: from French, 'senile, a senile person', reduplication based on gâteux, variant of gâteur, hospital slang in the sense 'bed wetter'.